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Portugal’s caves are amazing
(i.imgur.com)
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this post was submitted on 02 Aug 2023
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is that a sign on the cave wall?
Guessing high water marks or saying the tide comes in quick and be aware at all times
Probably a crushing danger warning. Rock formations near the sea are very exposed to erosion and there are lots of warnings in the rock walls in Portugal because there have been a number of deaths before.