Don't feel too bad, that was one of the few puzzles in the game that I could completely not understand either!
The other one was the puzzle that opened the third temple; I get the feeling it's really obvious, but I couldn't understand what I was "supposed" to do either time and just did it by trial and error :x
The other one was the puzzle that opened the third temple; I get the feeling it's really obvious, but I couldn't understand what I was "supposed" to do either time and just did it by trial and error :x