 Inside the park, NY 23A deviates from the creek at various points, occasionally losing sight of the waterway, but it consistently follows the creek valley of the upper Schoharie to within a few miles of its source.At the first bend taking the stream away from the road, NY 42 comes up from the hamlet of Lexington to the immediate south, the first of four state routes to terminate at NY 23A.The road, previously level, begins to climb gently and steadily as it heads away from NY 42 and into the center of Greene County.