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charles80 wrote:If at the bottom of a cave there is a wall of probably collapsed rocks and a gentle/moderate stream of air can be perceived there, does it mean that said cave has another opening or expands further?
charles80 wrote:Would that same opening be about at the same level of the blowing wall or could it be higher too, like the known cave opening?
rlboyce wrote:Sometimes, "local circulation" can also be to blame, where air is entering one hole, and exiting through another (or collapsed rocks covering an opening) nearby.
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