hmm
if u used a zone like RandomKid said behind a barrier and added a wire so “Player enters zone” to “activate barrier” with barrier set to “active on start: no”…
but you can still make a zone and a barrier with “player enters zone” → “activated barrier” and “player leaves zone” → “deactivate barrier” and save memory
or you could place 2 zones 1 behind and one in front of the log and the on behind hides the log and then the on in front of it shows it when you bump into the zone.