White Crater
I went to a crater, 46 km south of Bandung. People named the crater as Kawah Putih, literally: White Crater. It is a sulfur spring lake, so people can't swim.
The crater was formed by Mount Patuha eruption around tenth century. Native people of the area once believed that the crater was place of devils because birds would die when flied across the crater. Dutch's scientist, Dr. Franz Wilhelm Junghuhn in 1837 found that the sulfur spring which caused death of the birds, not devils.