Exploring a massive cave labyrinth hidden under Borneo

Eavis pulled on black running tights—standard wear for explorers in “hot” caves like those in Borneo, where temperatures can reach 80 degrees F.

Gunung Mulu National Park, located in Malaysia’s Sarawak state on the island of Borneo, is a UNESCO World Heritage site. In 1979, Eavis arrived in Borneo as part of a British expedition designed to study the rainforest and help the recently independent Malaysia understand the newly established Gunung Mulu National Park. Caving was still a relatively young sport, and Eavis and a team of four others were brought on only after expedition leaders realized that there were huge caves among the forest’s many treasures.

Source: www.nationalgeographic.com