Derived from rocks fall with leaf rustle 3.wav by Halleck
http://freesound.org/people/Halleck/sounds/121705/
http://creativecommons.org/licenses/by/3.0/

and Canvas Tent 3.wav by kevinkace
http://freesound.org/people/kevinkace/sounds/66775/
http://creativecommons.org/publicdomain/zero/1.0/