jd350az

What if there is no puzzle or multi cache in the area then the troop could work together to set them up, or a few could set them up and the rest could find them/work through them.

Was it your geocoin? They have to be activated to be able to log them if you are the original owner.

I've seen this type of cache mentioned before but what happens when you are done and need to put the cache back? does it drain slowly out eventually?

Who decides whether the hole was there already or dug out for the cache?