Cave...or mine? They did break up rock by drilling. However, your holes also look to create an M. So it could be a map of the general area. The big hole may be your current location.
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They do look like drill holes. Would take a bearing on each hole in relationships to each other. You say it's in a cave. How far inside are you? I see up at the top right some numbers. It may be giving you the measurements. Let us know.Hope I'm on the right thread. Do these look like drill holes to anyone besides me? They are in a cave. What do you think?View attachment 1397565View attachment 1397566View attachment 1397568
Here is some close ups of the cave in I took while I was in there. It may be a few days till I can get back in there because of work.View attachment 1398191View attachment 1398192View attachment 1398193