Spanish rescue dog named Tipi gets ready to search for survivors in a collapsed building after an earthquake, at Roma neighborhood in Mexico City, Mexico September 23, 2017. REUTERS/Carlos Jasso

Spanish rescue dog named Tipi gets ready to search for survivors in a collapsed building after an earthquake, at Roma neighborhood in Mexico City, Mexico September 23, 2017. REUTERS/Carlos Jasso

Indigenous leaders erect tipis in front of the Trump International Hotel as part of protest actions in opposition to the Dakota Access and Keystone XL pipelines in Washington, U.S., March 10, 2017. REUTERS/Kevin Lamarque

Indigenous leaders erect tipis in front of the Trump International Hotel as part of protest actions in opposition to the Dakota Access and Keystone XL pipelines in Washington, U.S., March 10, 2017. REUTERS/Kevin Lamarque

Indigenous leaders erect tipis in front of the Trump International Hotel as part of protest actions in opposition to the Dakota Access and Keystone XL pipelines in Washington, U.S., March 10, 2017. REUTERS/Kevin Lamarque

A burned tipi is seen in the recently closed Oceti Sakowin camp before the police raid in Cannon Ball, North Dakota, U.S., February 23, 2017. REUTERS/Stephen Yang

A tipi stands in deep mud as protesters prepare to evacuate the main opposition camp against the Dakota Access oil pipeline near Cannon Ball, North Dakota, U.S., February 22, 2017. REUTERS/Terray Sylvester

An opponent of the Dakota Access oil pipeline is seen through concertina wire while snowmobiling toward the protest camp near Cannon Ball, North Dakota, U.S., January 29, 2017. REUTERS/Terray Sylvester

Tipis on the outskirts of the Dakota Access oil pipeline protest camp are seen through concertina wire from a police outpost near Cannon Ball, North Dakota, U.S., January 29, 2017. REUTERS/Terray Sylvester

Tipis are seen on the outskirts of the Dakota Access oil pipeline protest camp near Cannon Ball, North Dakota, U.S., January 29, 2017. REUTERS/Terray Sylvester

Njama Tipis, a Maasai moran from Rombo Manyatta, competes in the 2016 Maasai Olympics at the Sidai Oleng Wildlife Sanctuary, at the base of Mt. Kilimanjaro, near the Kenya-Tanzania border in Kimana, Kajiado, Kenya December 10, 2016. REUTERS/Thomas Mukoya TPX IMAGES OF THE DAY

Campers maintain their tipi as high winds and a blizzard hit the Oceti Sakowin camp while "water protectors" continue to demonstrate against plans to pass the Dakota Access pipeline adjacent to the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 6, 2016. REUTERS/Lucas Jackson

Fireworks explode above tipis inside of the Oceti Sakowin camp as celebrations continue after the Army Corps of Engineers denied an easement for the $3.8 billion Dakota Access Pipeline to pass adjacent to the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 4, 2016. REUTERS/Lucas Jackson

Campers walk past tipis inside of the Oceti Sakowin camp as "water protectors" continue to demonstrate against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 3, 2016. REUTERS/Lucas Jackson

The rising sun illuminates tipis inside the Oceti Sakowin camp as "water protectors" continue to demonstrate against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 3, 2016. REUTERS/Lucas Jackson

Members of the Oglala Lakota tribe erect a tipi inside of the Oceti Sakowin camp as "water protectors" continue to demonstrate against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 2, 2016. REUTERS/Lucas Jackson

The tops of tipis are seen in Oceti Sakowin camp at sunset during a protest against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S. December 2, 2016. REUTERS/Stephanie Keith

Messages of support adorn the side of a tipi inside of the Oceti Sakowin camp as "water protectors" continue to demonstrate against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 2, 2016. REUTERS/Lucas Jackson

Tipi poles erected by members of the Oglala Lakota tribe stands inside of the Oceti Sakowin camp as "water protectors" continue to demonstrate against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 2, 2016. REUTERS/Lucas Jackson

A member of Oglala Lakota tribe works to erect a tipi inside of the Oceti Sakowin camp as "water protectors" continue to demonstrate against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 2, 2016. REUTERS/Lucas Jackson

Members of the Oglala Lakota tribe erect a tipi inside of the Oceti Sakowin camp as "water protectors" continue to demonstrate against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 2, 2016. REUTERS/Lucas Jackson

Members of the Oglala Lakota tribe erect a tipi inside of the Oceti Sakowin camp as "water protectors" continue to demonstrate against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 2, 2016. REUTERS/Lucas Jackson

Members of the Oglala Lakota tribe erect a tipi inside of the Oceti Sakowin camp as "water protectors" continue to demonstrate against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 2, 2016. REUTERS/Lucas Jackson

Members of the Oglala Lakota tribe erect a tipi inside of the Oceti Sakowin camp as "water protectors" continue to demonstrate against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 2, 2016. REUTERS/Lucas Jackson

Members of the Oglala Lakota tribe erect a tipi inside of the Oceti Sakowin camp as "water protectors" continue to demonstrate against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 2, 2016. REUTERS/Lucas Jackson

Tipis stand in the night inside of the Oceti Sakowin camp as demonstrations against plans to pass the Dakota Access pipeline continue near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., December 1, 2016. REUTERS/Lucas Jackson

A tipi is seen in the Oceti Sakowin camp during a protest against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S., November 30, 2016. REUTERS/Stephanie Keith

Two tipis are seen in the mist in an encampment during a protest against plans to pass the Dakota Access pipeline near the Standing Rock Indian Reservation, near Cannon Ball, North Dakota, U.S. November 19, 2016. REUTERS/Stephanie Keith

A tipi is seen at sunset during a protest against the Dakota Access pipeline on the Standing Rock Indian Reservation near Cannon Ball, North Dakota, U.S. November 10, 2016. REUTERS/Stephanie Keith

A person walks past smoke from a cooking fire at an encampment during a protest against the Dakota Access pipeline on the Standing Rock Indian Reservation near Cannon Ball, North Dakota, U.S. November 9, 2016. REUTERS/Stephanie Keith

A tipi is seen at sunrise at an encampment during a protest against the Dakota Access pipeline on the Standing Rock Indian Reservation near Cannon Ball, North Dakota, U.S. November 9, 2016. REUTERS/Stephanie Keith

A tipi is seen at sunrise at an encampment during a protest against the Dakota Access pipeline near the Standing Rock Indian Reservation near Cannon Ball, North Dakota, U.S. November 9, 2016. REUTERS/Stephanie Keith

A tipi is seen at sunrise at an encampment during a protest against the Dakota Access pipeline near the Standing Rock Indian Reservation near Cannon Ball, North Dakota, U.S. November 9, 2016. REUTERS/Stephanie Keith

A tipi is seen at sunrise at an encampment during a protest against the Dakota Access pipeline near the Standing Rock Indian Reservation near Cannon Ball, North Dakota, U.S. November 9, 2016. REUTERS/Stephanie Keith

Two men from the Rosebud Reversion in South Dakota fabricate tipi poles in an encampment during a protest of the Dakota Access pipeline on the Standing Rock Indian Reservation near Cannon Ball, North Dakota November 7, 2016. REUTERS/Stephanie Keith

A painting of two horses is seen on a tipi in an encampment during a protest against the Dakota Access pipeline near the Standing Rock Indian Reservation near Cannon Ball, North Dakota November 7, 2016. REUTERS/Stephanie Keith

Andrew Blanchflower fabricates a tipi in an encampment during a protest against the Dakota Access pipeline on the Standing Rock Indian Reservation near Cannon Ball, North Dakota November 7, 2016. REUTERS/Stephanie Keith

A painting of a hawk is seen inside a tipi in an encampment during a protest against the Dakota Access pipeline on the Standing Rock Indian Reservation near Cannon Ball, North Dakota November 7, 2016. REUTERS/Stephanie Keith

Steve Tamayo drives in stakes to his tipi in an encampment during a protest against the Dakota Access pipeline near the Standing Rock Indian Reservation near Cannon Ball, North Dakota November 7, 2016. REUTERS/Stephanie Keith

A tipi is seen in an encampment during a protest against the Dakota Access pipeline near the Standing Rock Indian Reservation near Cannon Ball, North Dakota November 7, 2016. REUTERS/Stephanie Keith

Phyllis Bald Eagle, age 57 from the Cheyenne River tribe from South Dakota, poses for a photograph in her tipi at a protest against the Dakota Access pipeline near the Standing Rock Indian Reservation near Cannon Ball, North Dakota November 4, 2016. REUTERS/Stephanie Keith

Phyllis Bald Eagle, age 57 from the Cheyenne River tribe from South Dakota, poses for a photograph in her tipi at a protest against the Dakota Access pipeline near the Standing Rock Indian Reservation near Cannon Ball, North Dakota November 4, 2016. REUTERS/Stephanie Keith

A festival goer makes his way through the tipis at Worthy Farm in Somerset, as the sun sets on the first day of the Glastonbury music festival June 25, 2014. Picture taken June 25, 2014. REUTERS/Cathal McNaughton (BRITAIN - Tags: SOCIETY ENTERTAINMENT)

A festival goer erects a tipi at Worthy Farm in Somerset during the first day of the Glastonbury Festival, June 25, 2014. REUTERS/Cathal McNaughton (BRITAIN - Tags: ENTERTAINMENT SOCIETY)

Zachary RunningWolf erects a teepee at Frank Ogawa Plaza in Oakland, California November 29, 2011. Protesters like RunningWolf are attempting to re-establish Frank Ogawa Plaza back as the Occupy Oakland campsite. REUTERS/Beck Diefenbach (UNITED STATES - Tags: BUSINESS POLITICS CIVIL UNREST)

A festival goer makes their way through the Teepee Field on the second day of Glastonbury Festival in Somerset June 23, 2011. Glastonbury, the world's biggest open air arts and music festival, officially opened on Wednesday. The main event starts on Friday and ends on Sunday night. Picture taken June 23, 2011. REUTERS/Cathal McNaughton (BRITAIN - Tags: ENTERTAINMENT SOCIETY)

A villager walks through dried mud which has submerged thousands of homes near the centre of a mudflow in Sidoarjo, East Java province November 18, 2009. In 2006, a hot mud volcano erupted in Porong, East Java, destroying homes, factories, and livelihoods. Attempts to staunch the flow failed and the stinking mud continues to spread. It now covers about 800 hectares (1,977 acres), has displaced nearly 60,000 people and killed 17. REUTERS/Sigit Pamungkas (INDONESIA ENVIRONMENT DISASTER)

A man looks at one of the tipi tents at the Glastonbury Festival 2009 in south west England June 24, 2009. Old favourites will dominate Glastonbury this year as Neil Young, Tom Jones, Status Quo and Blur join Bruce Springsteen on the main stage, marking a return to the festival's guitar-based roots after rap superstar Jay-Z headlined last year. REUTERS/Luke MacGregor (BRITAIN ENTERTAINMENT SOCIETY IMAGES OF THE DAY)

A traditional tipi is surrounded by cars as the parking lot fills up for the Oglala Nation Pow Wow and Rodeo in Pine Ridge, South Dakota, August 4, 2006. The annual festival is a bright spot for the Pine Ridge Indian Reservation -- which struggles with high unemployment and problems with substance abuse and gangs and is one of the poorest communities in the United States. Picture taken August 4, 2006. REUTERS/Jonathan Ernst (UNITED STATES)

Eagle Boy Whiteshield finishes raising his family's tipi, where they'll camp during the Oglala Nation Pow Wow and Rodeo in Pine Ridge, South Dakota, August 4, 2006. The annual festival is a bright spot for the Pine Ridge Indian Reservation -- which struggles with high unemployment and problems with substance abuse and gangs and is one of the poorest communities in the United States. Picture taken August 4, 2006. REUTERS/Jonathan Ernst (UNITED STATES)

NEW ZEALAND'S CONSERVATION MINISTER SANDRA LEE IS GREETED BY NGO MEMBER
FROM TONGA AT THE IWC CONFERENCE IN SHIMONOSEKI.


New Zealand's Conservation Minister Sandra Lee (L) is welcomed by
Filipe Tonga, an anti-whaling NGO member from Tonga, in front of his
tipi tent during a visit to an event square at Kaikyo Messe, venue for
the International Whaling Commission (IWC) conference in the Japanese
city of Shimonoseki May 19, 2002. The annual meeting will take place
from May 20 in Shimonoseki, an old whaling centre 850 km (500 miles)
southwest of Tokyo where whale meat is still a popular food.
REUTERS/Toshiyuki Aizawa

A worker shovels snow in front of tipis at the Olympic Snowboarding
venue at Park City February 3, 2002. The XIX Winter Olympic Games will
open on February 8. REUTERS/Eric Gaillard

LE/CRB

Festival goers camp in the tipi campsite at the Glastonbury Festival 2000 June 24. Today is the second day of the annual three-day festival with bands and DJ's from around the world entertaining the crowds.

AS/FMS

Festival goers Yasmine (R) and Jerome walk through the tipi campsite at the Glastonbury Festival 2000 June 24. Today is the first day of the annual three-day festival with bands and DJ's from around the world entertaining the crowds.

AS/WS

Festival goers Yasmine and Jerome kiss in the tipi campsite at the Glastonbury Festival 2000 June 24. Today is the second day of the annual three-day festival with bands and DJ's from around the world entertaining the crowds.

DC/WS

A festival goer sports a leopard skin fur coat and matching hairstyle in the tipi field at the Glastonbury Festival 2000 June 24. Today is the first day of the annual three-day festival with bands and DJ's from around the world entertaining the crowds.

AS