A worker chops firewood for sale in Damascus, Syria, February 19, 2017. Picture taken February 19, 2017. REUTERS/Omar Sanadiki 

Ivan Plakhuta, 54, the owner of a small workshop manufacturing valenki, Russian traditional footwear, packs ready for sale valenki at his wooden house in the remote Siberian village of Bolshaya Rechka, located in Taiga area in the foothills of the Western Sayan Mountain Ridge in the Yermakovsky district of Krasnoyarsk region, Russia, November 10, 2015. Plakhuta, former lumberman, started his small business in 2000, based on traditional methods, which don't involve chemical components with vintage machinery of the beginning of the 20th century used. Plakhuta and his assistant Larisa Chirkova work inside a wooden bath house in a rural court yard and monthly produce up to 20 pairs of valenki, felt high-knee footwear made of sheep wool and commonly worn in Russian rural areas. His clients are mostly inhabitants of villages in southern districts of Krasnoyarsk, Tuva and Khakassia regions, who buy valenki at the price of about 2,000 Russian roubles for a children's pair, 4,000 for women and 5,000 for men, according to Ivan Plakhuta. Picture taken November 10, 2015. REUTERS/Ilya Naymushin 

Ivan Plakhuta, 54, the owner of a small workshop manufacturing valenki, Russian traditional footwear, inspects a valenok before putting it into a dryer in the remote Siberian village of Bolshaya Rechka, located in Taiga area in the foothills of the Western Sayan Mountain Ridge in the Yermakovsky district of Krasnoyarsk region, Russia, November 10, 2015. Plakhuta, former lumberman, started his small business in 2000, based on traditional methods, which don't involve chemical components with vintage machinery of the beginning of the 20th century used. Plakhuta and his assistant Larisa Chirkova work inside a wooden bath house in a rural court yard and monthly produce up to 20 pairs of valenki, felt high-knee footwear made of sheep wool and commonly worn in Russian rural areas. His clients are mostly inhabitants of villages in southern districts of Krasnoyarsk, Tuva and Khakassia regions, who buy valenki at the price of about 2,000 Russian roubles for a children's pair, 4,000 for women and 5,000 for men, according to Ivan Plakhuta. Picture taken November 10, 2015. REUTERS/Ilya Naymushin 

Ivan Plakhuta, 54, the owner of a small workshop manufacturing valenki, Russian traditional footwear, rolls a valenok in the remote Siberian village of Bolshaya Rechka, located in Taiga area in the foothills of the Western Sayan Mountain Ridge in the Yermakovsky district of Krasnoyarsk region, Russia, November 10, 2015. Plakhuta, former lumberman, started his small business in 2000, based on traditional methods, which don't involve chemical components with vintage machinery of the beginning of the 20th century used. Plakhuta and his assistant Larisa Chirkova work inside a wooden bath house in a rural court yard and monthly produce up to 20 pairs of valenki, felt high-knee footwear made of sheep wool and commonly worn in Russian rural areas. His clients are mostly inhabitants of villages in southern districts of Krasnoyarsk, Tuva and Khakassia regions, who buy valenki at the price of about 2,000 Russian roubles for a children's pair, 4,000 for women and 5,000 for men, according to Ivan Plakhuta. Picture taken November 10, 2015. REUTERS/Ilya Naymushin 

Ivan Plakhuta, 54, the owner of a small workshop manufacturing valenki, Russian traditional footwear, burns a valenok to make it smooth in the remote Siberian village of Bolshaya Rechka, located in Taiga area in the foothills of the Western Sayan Mountain Ridge in the Yermakovsky district of Krasnoyarsk region, Russia, November 10, 2015. Plakhuta, former lumberman, started his small business in 2000, based on traditional methods, which don't involve chemical components with vintage machinery of the beginning of the 20th century used. Plakhuta and his assistant Larisa Chirkova work inside a wooden bath house in a rural court yard and monthly produce up to 20 pairs of valenki, felt high-knee footwear made of sheep wool and commonly worn in Russian rural areas. His clients are mostly inhabitants of villages in southern districts of Krasnoyarsk, Tuva and Khakassia regions, who buy valenki at the price of about 2,000 Russian roubles for a children's pair, 4,000 for women and 5,000 for men, according to Ivan Plakhuta. Picture taken November 10, 2015. REUTERS/Ilya Naymushin 

Ivan Plakhuta, 54, the owner of a small workshop manufacturing valenki, Russian traditional footwear, burns a valenok to make it smooth in the remote Siberian village of Bolshaya Rechka, located in Taiga area in the foothills of the Western Sayan Mountain Ridge in the Yermakovsky district of Krasnoyarsk region, Russia, November 10, 2015. Plakhuta, former lumberman, started his small business in 2000, based on traditional methods, which don't involve chemical components with vintage machinery of the beginning of the 20th century used. Plakhuta and his assistant Larisa Chirkova work inside a wooden bath house in a rural court yard and monthly produce up to 20 pairs of valenki, felt high-knee footwear made of sheep wool and commonly worn in Russian rural areas. His clients are mostly inhabitants of villages in southern districts of Krasnoyarsk, Tuva and Khakassia regions, who buy valenki at the price of about 2,000 Russian roubles for a children's pair, 4,000 for women and 5,000 for men, according to Ivan Plakhuta. Picture taken November 10, 2015. REUTERS/Ilya Naymushin 

Ivan Plakhuta, 54, the owner of a small workshop manufacturing valenki, Russian traditional footwear, hits a valenok to soften and put it into shape in the remote Siberian village of Bolshaya Rechka, located in Taiga area in the foothills of the Western Sayan Mountain Ridge in the Yermakovsky district of Krasnoyarsk region, Russia, November 10, 2015. Plakhuta, former lumberman, started his small business in 2000, based on traditional methods, which don't involve chemical components with vintage machinery of the beginning of the 20th century used. Plakhuta and his assistant Larisa Chirkova work inside a wooden bath house in a rural court yard and monthly produce up to 20 pairs of valenki, felt high-knee footwear made of sheep wool and commonly worn in Russian rural areas. His clients are mostly inhabitants of villages in southern districts of Krasnoyarsk, Tuva and Khakassia regions, who buy valenki at the price of about 2,000 Russian roubles for a children's pair, 4,000 for women and 5,000 for men, according to Ivan Plakhuta. Picture taken November 10, 2015. REUTERS/Ilya Naymushin 

Ivan Plakhuta, 54, the owner of a small workshop manufacturing valenki, Russian traditional footwear, operates a machine to shape wool in the remote Siberian village of Bolshaya Rechka, located in Taiga area in the foothills of the Western Sayan Mountain Ridge in the Yermakovsky district of Krasnoyarsk region, Russia, November 10, 2015. Plakhuta, former lumberman, started his small business in 2000, based on traditional methods, which don't involve chemical components with vintage machinery of the beginning of the 20th century used. Plakhuta and his assistant Larisa Chirkova work inside a wooden bath house in a rural court yard and monthly produce up to 20 pairs of valenki, felt high-knee footwear made of sheep wool and commonly worn in Russian rural areas. His clients are mostly inhabitants of villages in southern districts of Krasnoyarsk, Tuva and Khakassia regions, who buy valenki at the price of about 2,000 Russian roubles for a children's pair, 4,000 for women and 5,000 for men, according to Ivan Plakhuta. Picture taken with fish eye lens November 10, 2015. REUTERS/Ilya Naymushin 

Ivan Plakhuta, 54, the owner of a small workshop manufacturing valenki, Russian traditional footwear, works on a valenok in the remote Siberian village of Bolshaya Rechka, located in Taiga area in the foothills of the Western Sayan Mountain Ridge in the Yermakovsky district of Krasnoyarsk region, Russia, November 10, 2015. Plakhuta, former lumberman, started his small business in 2000, based on traditional methods, which don't involve chemical components with vintage machinery of the beginning of the 20th century used. Plakhuta and his assistant Larisa Chirkova work inside a wooden bath house in a rural court yard and monthly produce up to 20 pairs of valenki, felt high-knee footwear made of sheep wool and commonly worn in Russian rural areas. His clients are mostly inhabitants of villages in southern districts of Krasnoyarsk, Tuva and Khakassia regions, who buy valenki at the price of about 2,000 Russian roubles for a children's pair, 4,000 for women and 5,000 for men, according to Ivan Plakhuta. Picture taken November 10, 2015. REUTERS/Ilya Naymushin 

Ivan Plakhuta, 54, the owner of a small workshop manufacturing valenki, Russian traditional footwear, takes a valenok after boiling it on a furnace in the remote Siberian village of Bolshaya Rechka, located in Taiga area in the foothills of the Western Sayan Mountain Ridge in the Yermakovsky district of Krasnoyarsk region, Russia, November 10, 2015. Plakhuta, former lumberman, started his small business in 2000, based on traditional methods, which don't involve chemical components with vintage machinery of the beginning of the 20th century used. Plakhuta and his assistant Larisa Chirkova work inside a wooden bath house in a rural court yard and monthly produce up to 20 pairs of valenki, felt high-knee footwear made of sheep wool and commonly worn in Russian rural areas. His clients are mostly inhabitants of villages in southern districts of Krasnoyarsk, Tuva and Khakassia regions, who buy valenki at the price of about 2,000 Russian roubles for a children's pair, 4,000 for women and 5,000 for men, according to Ivan Plakhuta. Picture taken November 10, 2015. REUTERS/Ilya Naymushin 

Larisa Chirkova, 45, an assistant of Ivan Plakhuta, the owner of a small workshop manufacturing valenki, Russian traditional footwear, shapes wool in the remote Siberian village of Bolshaya Rechka, located in Taiga area in the foothills of the Western Sayan Mountain Ridge in the Yermakovsky district of Krasnoyarsk region, Russia, November 10, 2015. Plakhuta, former lumberman, started his small business in 2000, based on traditional methods, which don't involve chemical components with vintage machinery of the beginning of the 20th century used. Plakhuta and his assistant Larisa Chirkova work inside a wooden bath house in a rural court yard and monthly produce up to 20 pairs of valenki, felt high-knee footwear made of sheep wool and commonly worn in Russian rural areas. His clients are mostly inhabitants of villages in southern districts of Krasnoyarsk, Tuva and Khakassia regions, who buy valenki at the price of about 2,000 Russian roubles for a children's pair, 4,000 for women and 5,000 for men, according to Ivan Plakhuta. Picture taken November 10, 2015. REUTERS/Ilya Naymushin 

Swiss painter Ferdinand Holder's 'Der Holzfaeller' (the lumberman) is seen in the Bern Art Museum in the Swiss capital of Bern November 24, 2014.The Bern Art Museum has agreed to accept artworks from a billion-euro collection from the late Cornelius Gurlitt, a recluse whose trove included masterpieces looted from their Jewish owners by the Nazis. The Bern Art Museum discovered in May it had been named sole heir of Gurlitt, the recluse who secretly kept the collection of more than 1,200 artworks hidden for decades until tax inspectors stumbled upon them on a visit to his Munich apartment in 2012. REUTERS/Ruben Sprich (SWITZERLAND - Tags: ENTERTAINMENT POLITICS)

A woodcutter chops a log with his axe to sell at a timber yard in Rawalpindi September 13, 2013. REUTERS/Faisal Mahmood (PAKISTAN - Tags: SOCIETY) 

A professional lumberjack cuts a tree branch by branch before felling it in Hanau, 30km south of Frankfurt, August 28, 2013. REUTERS/Kai Pfaffenbach (GERMANY - Tags: BUSINESS EMPLOYMENT SOCIETY TPX IMAGES OF THE DAY) 

Stirling Hart from British Columbia competes in the springboard chop event during the Lumberjack World Championships in Hayward, Wisconsin July 27, 2013. Over 100 competitors from around the world are competing in 21 events ranging from sawing and chopping to log rolling. REUTERS/Eric Miller (UNITED STATES - Tags: SOCIETY) 

Loggers prepare timber for processing, at a facility near a forest at Abengourou June 30, 2013. Picture taken June 30, 2013. REUTERS/ Thierry Gouegnon (IVORY COAST - Tags: ENVIRONMENT SOCIETY BUSINESS) 

A logger cuts through a tree in a forest at Abengourou June 30, 2013. Picture taken June 30, 2013. REUTERS/ Thierry Gouegnon (IVORY COAST - Tags: ENVIRONMENT SOCIETY) 

A logger cuts through a tree in a forest at Abengourou June 30, 2013. Picture taken June 30, 2013. REUTERS/ Thierry Gouegnon (IVORY COAST - Tags: ENVIRONMENT SOCIETY) 

Labourers arrange wood for milling at Okobaba sawmill near the Lagos lagoon April 21, 2012. REUTERS/Akintunde Akinleye(NIGERIA - Tags: SOCIETY) 

A forester prepares to cut trees on the Duncombe Park Estate in Helmsley, northern England November 25, 2011. The estate has fifty thousand fir, spruce and pine trees growing on a forty acre site, with some three thousand of the five thousand trees per year cut being sold at Christmas to the public and commercial clients. REUTERS/Nigel Roddis (BRITAIN - Tags: ENVIRONMENT SOCIETY BUSINESS EMPLOYMENT) 

A forester trims the trunk of a Nordman tree on the Duncombe Park Estate in Helmsley, northern England November 25, 2011. The estate has fifty thousand fir, spruce and pine trees growing on a forty acre site, with some three thousand of the five thousand trees per year cut being sold at Christmas to the public and commercial clients. REUTERS/Nigel Roddis (BRITAIN - Tags: ENVIRONMENT SOCIETY BUSINESS EMPLOYMENT) 

An illegal logger cuts down a tree to be turned into planks for construction in a forest south of Sampit in Indonesia's Central Kalimantan province in this November 14, 2010 file photo. Indonesia's President Susilo Bambang Yudhoyono inked into law a two-year moratorium on new permits to clear primary forest, as part of a $1 billion climate deal with Norway, a presidential advisor on climate change said on May 19, 2011. Picture taken November 14, 2010. REUTERS/Yusuf Ahmad (INDONESIA - Tags: ENVIRONMENT POLITICS) 

A lumberjack working for state owned Austrian Bundesforste AG fells a tree in a wood near Vienna August 24, 2010. Bundesforste AG is Austria's biggest wood owner, producing 2.1 million solid cubic meters of timber a year and made 220 million euros ($277 million) operating result in 2009. REUTERS/Lisi Niesner (AUSTRIA - Tags: ENVIRONMENT BUSINESS) 

An Afghan lumberjack poses in Kabul May 4, 2010. REUTERS/Ahmad Masood (AFGHANISTAN - Tags: SOCIETY) 

Woodcutters walk past cut down trees near the construction site of the Boguchanskaya hydroelectric power station on the Angara River, near the town of Kodinsk, about 750 km (466 miles) to the northeast from the Siberian city of Krasnoyarsk, April 22, 2010. The power plant will have an installed capacity of 3,000 megawatts, generating 17.6 billion kilowatt hours annually. REUTERS/Ilya Naymushin (RUSSIA - Tags: BUSINESS ENERGY) 

A woodcutter uses a saw to cut down trees in a forest near the construction site of the Boguchanskaya hydroelectric power station on the Angara River, near the town of Kodinsk, northeast from the Siberian city of Krasnoyarsk, April 22, 2010. The power plant will have an installed capacity of 3,000 megawatts, generating 17.6 billion kilowatt hours annually. REUTERS/Ilya Naymushin (RUSSIA - Tags: BUSINESS ENERGY ENVIRONMENT) 

A man carries a section of a trunk from the Rowland Camp forest in Kenya's capital Nairobi July 14, 2009. REUTERS/Noor Khamis (KENYA SOCIETY ENVIRONMENT) 

Loggers carry sections of trunks from the Rowland Camp forest in Kenya's capital Nairobi July 14, 2009. REUTERS/Noor Khamis (KENYA SOCIETY ENVIRONMENT) 

A Swiss woodcutter saws down a beech tree in a forest near Lucerne October 14, 2008. REUTERS/Michael Buholzer (SWITZERLAND) 

A carving of a woodsman is seen in a forest clearing in Perthshire, Scotland April 3, 2008. REUTERS/Russell Cheyne (BRITAIN) 

A carving of a woodsman is seen in a forest clearing in Perthshire, Scotland April 3, 2008. REUTERS/Russell Cheyne (BRITAIN) 

A lumberjack works on Mount Parnitha, north of Athens August 8, 2007. Workers chopped burnt trees for the construction of barricades to prevent floods which might hit Athens after a large area of Mount Parnitha was destroyed during summer forest fires. REUTERS/Yiorgos Karahalis (GREECE) 

Lumberjacks smoke cigarettes while sitting inside a burnt forest on Mount Parnitha, north of Athens August 8, 2007. Workers chopped burnt trees for the construction of barricades to prevent floods which might hit Athens after a large area of Mount Parnitha was destroyed during summer forest fires. REUTERS/Yiorgos Karahalis (GREECE) 

Lumberjacks carry a tree trunk in Mount Parnitha, north of Athens August 8, 2007. Workers chopped burnt trees for the construction of barricades to prevent floods which might hit Athens after a large area of Mount Parnitha was destroyed during summer forest fires. REUTERS/Yiorgos Karahalis (GREECE) 

A lumberjack holds a chainsaw as he walks through a burnt forest in Mount Parnitha, north of Athens August 8, 2007. Workers chopped burnt trees for the construction of barricades to prevent floods which might hit Athens after a large area of Mount Parnitha was destroyed during summer forest fires. REUTERS/Yiorgos Karahalis (GREECE) 

A lumberjack works in a burnt forest in Mount Parnitha, north of Athens August 8, 2007. Workers chopped burnt trees for the construction of barricades to prevent floods which might hit Athens after a large area of Mount Parnitha was destroyed during summer forest fires. REUTERS/Yiorgos Karahalis (GREECE) 

A lumberjack works in a burnt forest in Mount Parnitha, north of Athens August 8, 2007. Workers chopped burnt trees for the construction of barricades to prevent floods which might hit Athens after a large area of Mount Parnitha was destroyed during summer forest fires. REUTERS/Yiorgos Karahalis (GREECE) 

A lumberjack hands over nails to a colleague during works on Mount Parnitha, north of Athens August 8, 2007. Workers chopped burnt trees for the construction of barricades to prevent floods which might hit Athens after a large area of Mount Parnitha was destroyed during summer forest fires. REUTERS/Yiorgos Karahalis (GREECE) 

A worker feeds logs, cut from virgin Amazon rainforest, into one of the nearly 1,200 ovens used to turn the wood into charcoal for use in iron smelters and for home use, just outside the town of Ulianopolis in Para state July 5, 2007. The cutting of trees for the charcoal industry is one of the main causes of the destruction of the world's largest rainforest. REUTERS/Paulo Santos (BRAZIL) 

A worker feeds logs, cut from virgin Amazon rainforest, into one of the nearly 1,200 ovens used to turn the wood into charcoal for use in iron smelters and for home use, just outside the town of Ulianopolis in Para state July 5, 2007. The cutting of trees for the charcoal industry is one of the main causes of the destruction of the world's largest rainforest. REUTERS/Paulo Santos (BRAZIL)