Roughly 25 miles south of I-90 at Sprague (Exit 245) lies the Bureau of Land Management (BLM)'s Escure Ranch. Formerly a sheep ranch run by Basque sheepherders, the ranch contains a stretch of Rock Creek, including Towell Falls.
The trail follows an old ranch road for three miles along Rock Creek with views of the valley, basalt outcroppings, aspen, spring wildflowers, and native bunchgrass. The BLM provides a good map of the area.