“"Tommy”
A 1975 rock opera, “Tommy” featued the music of The Who. It was a dark tale told with classic rock music that sticks in your head.
Release Tommy from the quiet darkness, but do not use tools or force. Do not attempt to disassemble the hide, but instead, sing the most famous song from the opera. The terrain rating is not for finding the cache, but replacing it. The difficulty rating is generous to entice you to use your brain instead of your brawn.