Blue Disc Trail (Harriman State Park)

The trail was official in 1943, when Alexander Jassup replaced the red markers with blue discs.

The Blue Disc Trail continues for another 0.3 of a mile to the top of Almost Perpendicular, a name given by the Fresh Air Club in 1936.

The trail continues on old, eroded road and crosses the gas line again at 1.35 miles (2.17 km).

The next section of the Blue Disc Trail, continuing north, goes over the Big Pine Hill.

From atop the mountain, the route followed a trail that reached Claudius Smith Rock with green cairns.

[2] In spring 1932, Paul H. Schubert (d. 1961) marked a trail with red discs that stretched from Sloatsburg, New York, to Miss Julia Siedler's property on Johnsontown Road to Almost Perpendicular.

At sporadic times, Miss Siedler and the TP Association closed their lands so that they would not become public thoroughfares.