Designated a World Heritage Site by UNESCO in 2001, Tsodilo comprises four main hills: Male Hill, Female Hill, Child Hill and North Hill with paintings occurring on all four. This region shows human occupation going back 100,000 years. At sunset the western cliffs of the Hills radiate a glowing light that can be seen for miles around, for which the local Juc’hoansi call them the 'Copper Bracelet of the Evening'.