Lots of people know about the playground part of Goat Hill Park, right there on Kennedy Street between Ancell and Mount Vernon. And that's probably the best place to start your search. Fewer people know about Upper Goat Hill Park, tucked away up the hill, a hidden strip of green that's a nice retreat in any weather but absolutely perfect for sledding in the winter. If you can find your way up there, locating the cache shouldn't be too difficult. It's in a small plastic cache container about twenty feet off the green. A recent brush-clearing means no bushwhacking to get there, at least until it grows back.
The cache is called Sabretooth because son of Coriakin thought it would be cool to name our caches after mutant supervillains, because reasons.
Big thanks to user NoVA-GRT for hooking us up with some awesome cache-hiding gear!