The Sarawak Chamber is 700 meters long, 400 meters wide and about 70 meters high. It is as large as a space to store 40 Jumbo Jet Boeings , or equivalent of 14 football pitches. The dome of the Sarawak Chamber was discovered in 1985 by three Englishmen – Andy Eavis, Dave Checkley and Tony White.
The Good Luck Cave is located about 3 hours walk from the tourist center in the park. The trail will get you to the Camp 1, which takes about two hours. Then you turn right and continue along the trail to the peak of Gunung Api. There is a special section in the Sarawak Chamber, about 400 meters long, which you have to swim across.