A boat sails past the Aquaretum fountain during sunny weather on Lake Zurich in Zurich, Switzerland August 10, 2022. REUTERS/Arnd Wiegmann 

A boat sails past the Aquaretum fountain during sunny weather on Lake Zurich in Zurich, Switzerland August 10, 2022. REUTERS/Arnd Wiegmann 

A Swiss Air Force Super Puma helicopter drops water for cows in the Tissiniva mountain pasture due to an ongoing drought in Charmey, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A bucket carried by the Swiss Air Force Super Puma helicopter with water for cows, is pictured in the Tissiniva mountain pasture due to an ongoing drought, in Charmey, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A Swiss Air Force Super Puma helicopter delivers water for cows in the Tissiniva mountain pasture due to an ongoing drought in Charmey, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A Swiss Air Force Super Puma helicopter flies as it picks up water from the Montsalvens Lake for cows in a mountain pasture due to an ongoing drought in Broc, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A Swiss Air Force Super Puma helicopter delivers water for cows in the Tissiniva mountain pasture due to an ongoing drought in Charmey, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A Swiss Air Force Super Puma helicopter delivers water for cows in the Tissiniva mountain pasture due to an ongoing drought in Charmey, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A Swiss Air Force Super Puma helicopter delivers water for cows in the Tissiniva mountain pasture due to an ongoing drought in Charmey, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A Swiss Air Force Super Puma helicopter leaves after delivering water for cows in the Tissiniva mountain pasture due to an ongoing drought in Charmey, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A Swiss Air Force Super Puma helicopter picks up water from the Montsalvens lake for cows in a mountain pasture amid an ongoing drought in Broc, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A Swiss Air Force Super Puma helicopter picks up water from the Montsalvens lake for cows in a mountain pasture amid an ongoing drought in Broc, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A Swiss Air Force Super Puma helicopter picks up water from the Montsalvens lake for cows in a mountain pasture amid an ongoing drought in Broc, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A Swiss Air Force Super Puma helicopter picks up water from the Montsalvens lake for cows in a mountain pasture amid an ongoing drought in Broc, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A Swiss Air Force Super Puma helicopter picks up water from the Montsalvens lake for cows in a mountain pasture amid an ongoing drought in Broc, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A Swiss Air Force Super Puma helicopter picks up water from the Montsalvens lake for cows in a mountain pasture amid an ongoing drought in Broc, Switzerland, August 10, 2022. REUTERS/Denis Balibouse 

A tourist boat sails back at the end of the Doubs canyon on the drought-affected Doubs River on the border with France in Les Brenets, Switzerland, August 8, 2022. REUTERS/Denis Balibouse TPX IMAGES OF THE DAY 

People cross from Switzerland to France on a bridge over the drought-affected Doubs River in Les Brenets, Switzerland, August 8, 2022. REUTERS/Denis Balibouse 

Kayaks, pedal boats and paddle boards are seen on the dried bed of the drought-affected Doubs River on the border with France in Les Brenets, Switzerland, August 8, 2022. REUTERS/Denis Balibouse 

People look at the dried Saut du Doubs waterfall on the drought-affected Doubs River on the border with France in Les Brenets, Switzerland, August 8, 2022. REUTERS/Denis Balibouse 

Boats are seen on the dried bed of the drought-affected Doubs River on the border with France in Les Brenets, Switzerland, August 8, 2022. REUTERS/Denis Balibouse 

A tourist boat is docked at the end of the Doubs canyon on the drought-affected Doubs River on the border with France in Les Brenets, Switzerland, August 8, 2022. REUTERS/Denis Balibouse 

Boats are seen on the dried bed of the drought-affected Doubs River on the border with France in Les Brenets, Switzerland, August 8, 2022. REUTERS/Denis Balibouse 

People take pictures of boats on the dried bed of the drought-affected Doubs River on the border with France in Les Brenets, Switzerland, August 8, 2022. REUTERS/Denis Balibouse 

A child walks among rocks in the dried bed of the drought-affected Doubs River on the border with France in Les Brenets, Switzerland, August 8, 2022. REUTERS/Denis Balibouse 

Watches of Swiss watch manufacturer IWC Schaffhausen, owned by luxury group Richemont are displayed at the company's store at the Bahnhofstrasse shopping street in Zurich, Switzerland August 8, 2022. REUTERS/Arnd Wiegmann 

The logo of watch manufacturer Breitling is seen at a shop in Zurich, Switzerland August 8, 2022. REUTERS/Arnd Wiegmann 

The logo of watch manufacturer Breitling is seen at a shop in Zurich, Switzerland August 8, 2022. REUTERS/Arnd Wiegmann 

People queue in front of a Swatch shop in Zurich, Switzerland August 8, 2022. REUTERS/Arnd Wiegmann 

A rainbow-colored logo of H&M is seen at a store in Zurich, Switzerland August 8, 2022. REUTERS/Arnd Wiegmann 

A rainbow-colored logo of H&M is seen at a store in Zurich, Switzerland August 8, 2022. REUTERS/Arnd Wiegmann 

A rainbow-colored logo of H&M is seen at a store in Zurich, Switzerland August 8, 2022. REUTERS/Arnd Wiegmann 

A rainbow-colored logo of H&M is seen at a store in Zurich, Switzerland August 8, 2022. REUTERS/Arnd Wiegmann 

A tanks farm of petrol-based products owned by Tamoil is seen in Aigle, Switzerland, August 5, 2022. REUTERS/Denis Balibouse 

A tank farm of petrol-based products owned by Tamoil is seen in Aigle, Switzerland, August 5, 2022. REUTERS/Denis Balibouse 

A tanks farm of petrol-based products owned by Tamoil is seen in Aigle, Switzerland, August 5, 2022. REUTERS/Denis Balibouse 

A view of an axel of the pump turbine in the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

The Emosson dam is pictured above of the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

Alain Sauthier, Director of Nant de Drance talks to a journalist in front of a safety valve of the penstock in the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

Alain Sauthier, Director of Nant de Drance talks to a journalist above the main inlet valve of the penstock in the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

Part of the transformers chamber is seen in the newly operational Nant de Drance pumped storage electricity power plant, in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

Water level marks are seen on the reservoir of the Vieux Emosson dam, above of the newly operational Nant de Drance pumped storage electricity power plant, in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

Water level marks are seen on the reservoir of the Vieux Emosson dam, above of the newly operational Nant de Drance pumped storage electricity power plant, in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

Turbines are seen in power house of the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

Alain Sauthier, Director of Nant de Drance poses in front of a safety valve of the penstock in the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

The main spherical valve is pictured underneath the turbine in the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

People walk on the Vieux Emosson dam, above of the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

The Vieux Emosson and Emosson dams are pictured above of the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

People walk on the Vieux Emosson dam, above of the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

Turbines are seen in power house of the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

The Vieux Emosson and Emosson dams are pictured above of the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

Turbines are seen in power house of the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse 

People walk on the Vieux Emosson dam, above of the newly operational Nant de Drance pumped storage electricity power plant in Finhaut, Switzerland, August 4, 2022. REUTERS/Denis Balibouse TPX IMAGES OF THE DAY 

A man jumps during sunny weather from a bridge into the Limmat river in Zurich, Switzerland August 4, 2022. REUTERS/Arnd Wiegmann 

People swim in the Limmat river in Zurich, Switzerland August 4, 2022. REUTERS/Arnd Wiegmann 

People relax around a public fountain in Zurich, Switzerland August 4, 2022. REUTERS/Arnd Wiegmann 

People swim in the Limmat river in Zurich, Switzerland August 4, 2022. REUTERS/Arnd Wiegmann TPX IMAGES OF THE DAY 

Bachir Heybach makes a handstand before he jumps to cool off into the Limmat river in Zurich, Switzerland August 4, 2022. REUTERS/Arnd Wiegmann 

People swim in the Limmat river in Zurich, Switzerland August 4, 2022. REUTERS/Arnd Wiegmann 

A boy wades past a disused diving platform on Lake Constance, in Arbon, Switzerland August 4, 2022. REUTERS/Andrew RC Marshall