Lake Assal is a crater lake in central-western Djibouti. It is located at the western end of Gulf of Tadjoura in the Tadjoura Region, touching Dikhil Region, at the top of the Great Rift Valley, some 120 km (75 mi) west of Djibouti city. Lake Assal is a saline lake which lies 155 m (509 ft) below sea level in the Afar Triangle, making it the lowest point on land in Africa and the third-lowest land depression on Earth after the Dead Sea and Sea of Galilee.

Living on the edge of Exmoor, Rob takes his inspiration from the rolling countryside surrounding his home, where each Bough House sculpture takes several months to construct. The designs do not follow an explicit plan or process, each piece is unique. They evolve and flow freely, as part of a creative journey which has no natural limit, whilst also revealing great logic and engineering integrity. Every aerial walkway or staircase leads to a room - there are no dead-ends and every turret and tower can be reached.

People are reflected in a shop window as they walk along a street in a shopping district in Tokyo, Japan June 25, 2015. (Photo by Thomas Peter/Reuters)

Tourists walk above a tea plantation in Enshi, Hubei province, December 27, 2015. (Photo by Reuters/Stringer)

Doris Pennman adjusts her umbrella as she walks along Mission Beach on January 8, 2005 in San Diego, Califonia. (Photo by Sandy Huffaker/Getty Images)

A beachgoer walks past a buoy that washed ashore after Hurricane Isabel made landfall September 19, 2003 in Virginia Beach, Virginia. (Photo by Joe Raedle/Getty Images)

A model walks down the runway during the Odd Molly Autumn/Winter 2012 Fashion Show at Berns on February 1, 2012 in Stockholm, Sweden. (Photo by Ian Gavan/Getty Images)

A Buddhist nun walks along a path as a stupa is seen at a temple in Anuradhapura, Sri Lanka October 16, 2016. (Photo by Dinuka Liyanawatte/Reuters)