Good Luck Cave

Good Luck Cave
Gua Nasib Bagus
LocationGunung Mulu National Park, Sarawak
Length2,900 m (9,500 ft)
Height variation412 m (1,352 ft)
Discovery1980
DifficultyAdvanced
AccessRestricted
FeaturesSarawak chamber (largest underground chamber in the world)
WebsiteOfficial website

Gua Nasib Bagus (Good Luck Cave) or Lubang Nasib Bagus is a cave located in the state of Sarawak in Malaysia. It is one of many caves found within Gunung Mulu National Park, a World Heritage Site on the island of Borneo.

The cave houses the second largest known underground chamber in the world, Sarawak Chamber. It is about 600 m long, about 415 m wide, and around about 80 m high.