View of Kanchenjunga, Kangchendzonga range, Ganesh Tok viewpoint, Gangtok, Sikkim, India, Asia

Stucco sculpture, Monster Mouth, The Tomb of Ukit Kan Lek Tok (Mayan Ruler), The Acropolis, Ek Balam, Mayan archaeological site, Yucatan, Mexico, North America

River Kwai train crossing the Wampoo Viaduct on the Death Railway above the River Kwai valley near Nam Tok, Kanchanaburi, Thailand, Southeast Asia, Asia

River Kwai train crossing the Wampoo Viaduct on the Death Railway above the River Kwai valley near Nam Tok, Kanchanaburi, Thailand, Southeast Asia, Asia

View of Kanchenjunga from Hanuman Tok temple, Sikkim, Himalayas, India, Asia

Stucco sculpture, Tomb of Ukit Kan Lek Tok, Mayan Ruler, The Acropolis, Ek Balam, Mayan archaeological site, Yucatan, Mexico, North America

Stucco sculpture, Tomb of Ukit Kan Lek Tok, Mayan Ruler, The Acropolis, Ek Balam, Mayan archaeological site, Yucatan, Mexico, North America

A boat on the River Kwai with the POW-built Wampoo Viaduct behind, Death Railway near Nam Tok, Kanchanaburi, Thailand, Southeast Asia, Asia

Hanuman Tok, a highly revered and holy temple dedicated to Lord Hanuma (monkey god), located at an altitude of 7200 ft, Sikkim, India, Asia

A boat on the River Kwai with the POW-built Wampoo Viaduct behind, Death Railway near Nam Tok, Kanchanaburi, Thailand, Southeast Asia, Asia

Gangtok seen from Ganesh Tok, East Sikkim, Sikkim, India, Asia

Small animal tracks in sand, Tok Tokkie trail, NamibRand nature reserve, Namibia, Africa

A winged warrior carved in stone protecting the Tomb of Ukit Kan Le'K Tok, Ek Balam, Yucatan, Mexico, North America

Trumpeter Swan (Cygnus buccinator) stretching its wings on a pond, Tok Cutoff, Alaska, United States of America, North America

Shadow of traillists on Tok Tokkie trail, NamibRand Nature Reserve, Namibia, Africa

Female hand with smartphones close up, young woman using mobile phone, Instagram, Tik Tok and Facebook, France, Europe

Traillists on Tok Tokkie trail, NamibRand Nature Reserve, Namibia, Africa

Ganesh Tok, Gangtok, Sikkim, India, Asia

CAMBODIA Grandmother and baby in hammock. Don Tok village, Kampot, lies beside a river estuary and is often flooded by sea water, a consequence of climate change during the last few years. CRS is studying the problem through its partner agency, SCW (Save Cambodian Wildlife). These people have to endure the inconvenience of daily flooding around their homes. photo by Sean Sprague

CAMBODIA Group of children. Don Tok village, Kampot, lies beside a river estuary and is often flooded by sea water, a consequence of climate change during the last few years. CRS is studying the problem through its partner agency, SCW (Save Cambodian Wildlife). Local children and families who are being affected by local flooding. photo by Sean Sprague

Domed roof of Toqi Zargaron, also known as Toki Zargaron, jewellers trading market, Bukhara, Uzbekistan

Mayan temple ruins of Ek Balam, View onto the twin pyramid and the Acropolis with the tomb of Ukit Kan Le'k Tok' in the back, State of Yucatan, Peninsula Yucatan, Mexico

Souvenir shop in Tok, Alaska Highway, Alaska, USA

Souvenir shop in Tok, Alaska Highway, Alaska, USA

Hikers, trekkers on the Tok Tokie Trail, NamibRand Nature Reserve, Namib Naukluft Park, Namibia, Africa

American Chevron gas station in Tok, Alaska Highway, Alaska, USA

Street sign of the Alaska Highway, Tok, Alaska, USA

Mountain range reflects on Mentasta Lake with fall coloured foliage under blue sky, Tok cutoff from the Glenn Highway, South-central Alaska in autumn; Alaska, United States of America