Where is the biggest cave?

Answer 1

According to Wikipedia:

The largest room ever discovered is the Sarawak chamber, in the Gunung Mulu National Park (Miri, Sarawak, Borneo, Malaysia), a sloping, boulder strewn chamber with an area of approximately 700 by 400 metres (2,297 by 1,312 ft) and a height of 80 metres (260 ft). The nearby Clearwater Cave System is believed to be the world's largest cave by volume, with a calculated volume of 30,347,540 m3.

Answer 2

The Longest Crystal in the Cave Of The Crystals is 11.0 m (36 ft) in length, 4.0 m (13 ft) in diameter and 55 tons in weight.
The Cave in the Naica Mine in Chihuahua, Mexico, was discovered by the brothers Juan and Pedro Sanchez in April 2000, who were drilling a new tunnel at the time.

Answer 3

You can look up all kinds of info on National Geographics. but i think one of the largest is somewhere in mexico called the Crystal Palace. There are caverns in Mexico that confront extreme conditions and you and find extraordinary beautiful crystals there.

Answer 4

in poo land