volcanic cave

Large herbivores such as elephants often look for natural mineral deposits to replenish their sodium intake because minerals from plants and water are not sufficiently sodium.

In volcanic caves there are numbers from C1 to C6, scientists find thousands of relics are ceramic pieces, stone tools, stripped pieces, sketches, animal teeth, freshwater mollusk

Scientists from the General Department of Geology & Minerals and the Japan Cave Association discovered the largest volcanic cave system in Southeast Asia in the Central Highlands.