In response to kurufinwe
Spoiler:there were three holes which you had to throw boulders in, you had to wait till it hit a twig to drop the next one in and so on to complete the sequence and open up another part of the island
really was easy, there weren't really any hard puzzles in this version apart from the prosthetic shop where you had to get the 3 reels right, there was no firm logic to that crap at all!