This was taken from a boat while we were travelling between islands in Thailand. We were told that birds nests were harvested from the roof of these caves, and exported to China for the infamous birds nest soup. All very foreign to me, and the ladders looked so rickety that I can only assume that health and safety regulations were foreign to this area.
The colour of the sea in this part of the world never ceases to amaze me. It definitely lets me know that I am in foreign climes.