The West African country of Ghana was called the Gold Coast when this map was made in 1924.

In the days before computers making maps was a very time consuming and often repetitive process. The group of young army officers surveying this part of the country were tired after many days in the hot sun but they hadn't finished their work, they still had one more hill to survey. They assumed no one would notice if they decided to cheat. In the space on the map that was left for the remaining hill, the officers drew an elephant copied from a magazine and they added contour lines around its shape!

They were right - no one noticed, and 'the elephant hill' continued to appear on maps until the 1960s.