Several hills in the town of Newburgh exceed above sea level. The southern tip of Marlboro Mountain, most of which including the summit is located in Ulster County, extends southward into the town of Newburgh east of Pressler Road and west of Frozen Ridge Road. While the peak of the mountain in Ulster County is over above sea level, the southernmost extremity of the mountain in the town of Newburgh is over . Fox Hill, in the northwestern corner of the town near the boundary with the town of Shawangunk, also exceeds . Its sister peak of Kings Hill, across Route 300, is also over high. Straddling the border with the town of Shawangunk, it is dominated by a large Christian cross, lit at night, erected and maintained at the summit by the private property owner.