 Just west of the intersection is Algonquin Middle School, part of the Averill Park Central School District.Past NY 66, NY 351 changes names to Round Top Road and heads into an isolated part of Poestenkill, passing through a mixture of forests and sparsely developed open areas as it meanders northward.After of little to no development, NY 351 enters the hamlet of Poestenkill, the northernmost community of significance along the route.