Clint Eastwood starred with Lee Marvin in the movie, the very unforgettable gravel voiced rendering of " I was born under a wandrin' star", sung by Marvin probably being the most recognised song from that movie. Those two guys did their own singing, but not so for many of the other actors in the film. Eastwood starred in the TV series Rawhide for 7 years and after that time decided to look for more scope. He now directs, acts, sings and composes, composition being his main interest. You are looking for a smallish cache container placed of course in a tree. Nice and easy. Enjoy the park.