United States, Colorado, San Juan, San Juan National Forest. 550 to Purgatory, Lt. on Hermosa Creek Rd. (FS548) Take Rt. on junct of Cascade Divide and Relay Creek Rd. to Cascade Divide, take Trailhead to talus slope.
37.7289466 -107.8607978 +-1000m. WGS84
T40N R9W SEC16 E½
I plotted the UTM in the given TRS along FS Trail 509. The turnoff road is 578 not 548. RA