I wonder if when you signed the waiver at dive spots or chked in, they could give you a map of the cave system with areas that could be dangerous marked on the map. You only get a map when you produce a cave card.
Or use common sense. If you are heading into an area that you aren't sure about, that might be time to turn the dive. I guess im assuming that all of us actually pay that close of attention too important things tho.
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