There is a cave between two giant statues. The cave in blocked with wood.

Is That Where Red Crayons Are?

i was stuck on this for ages but i will try and explain it to you.

when you go into the desert make a left and keep following this wall until you get to the
half buried pyrimid thing. go through the space between the pyrimid and the wall to the
right then turn the veiw around and the cave should be boarded up with wood

sorry if this doesnt help :S