This is a challenge cache and IS at the posted coordinates.
When I first started caching, I wasn't interested in going after multi-caches as, my thinking at the time, why go after a cache with multiple waypoints only to get just one find when you could simply just go after multiple finds? As time went on I began to appreciate the multi-cache (and other types as well) and this challenge is to reward the cacher who collects multi-caches. I name the series The Rube Goldberg Challenge because a Rube Goldberg maching has multiple and complicated ways to complete a simple task, like a multi-cache, requiring multiple (though sometimes not complicated) steps to complete. All you have to do to qualify is to find and log 50 multicaches anywhere in the world. You may sign the log anytime but only claim a find once you make the checker happy. Enjoy.
I qualify for this challenge by having found more than 50 multicaches.