The process of forming a glowworm cave starts when rainwater, combined with carbon dioxide, creates a weak acid. This acidic water seeps into the limestone bedrock below and dissolves the rock, gradually creating the cave. With time, the cave becomes a favorable environment for glowworms to inha...
it actually would have been cheaper to build the skyscraper where the bedrock was deep - because the cost of land in that area was far less than in areas with shallow bedrock.Any extra cost associated with digging to the bedrock, would be canceled out by lower land cost, and, some skyscr...