This is a spot in Catskill Park, NY. The creek branch here is at 1800 feet and runs down into the East Branch Delaware River. Coming up from the creek, I didn't see much, until I got up to around 1900 feet. Then I started to see faint traces of rock arrangements on boulders:A possible split wedge:Stacked stones (the two small ones at the left tip added by hikers, evidence being the snow sled marks on the lower rock):And a see through niche on top of a boulder that was on top of a small runoff spring. The mountainside here seemed to be filled with little springs here and there:This is of the rock that forms the "roof" of the see through niche. The matching ends of that rock exhibit that the rock was probably split and the left side slid away and propped on the supporting stone, forming the niche:This is looking at the boulder and the niche together. Notice the space under the boulder resembles the see through niche on top? I'm not sure if this is deliberate or not, but I found it interesting because the space under the boulder seems to be an entryway to where the water flows under the boulder.That's as far up the mountain as I got, about 2100 feet in elevation. I headed back down, now following the trail instead of the stonework that lead up to the niche. At a bend in the trail, I perused this structure for a long time before saying out loud "What is that?"...to be continued.