Boiling Spring is one of the few landmarks that made it onto the trail map for this area. I've wanted to check it out for a few years, and finally took the hike out here. Exploring, I found TWO locations that could be Boiling Spring. This cache is hidden near a natural spring that might have once had a small spring house built on top.
When you reach the gas line, take the main trail from EH9 to BS2, then to the cache.