The one that stumped us wasn’t even that! It was in a forest area where there is a ‘dragon’ statue and his mouth opens up to reveal a staircase to the upper level. And you do that by clicking something nearby, but the clickable area was really hidden and we just never found it.
I’m with you, to this day the only puzzle that still is challenging is the marble puzzle.
The one that stumped us wasn’t even that! It was in a forest area where there is a ‘dragon’ statue and his mouth opens up to reveal a staircase to the upper level. And you do that by clicking something nearby, but the clickable area was really hidden and we just never found it.