Question: Which U.S. National Monument spans 87563 acres of mountains and forestland, and borders a large wilderness area located in Piscataquis County in north-central Maine, United States?
Sentence (from "Ventana Wilderness"): This wilderness was established in 1969 when the Ventana Wilderness Act redesignated the 55,800-acre (22,600 ha) Ventana Primitive Area as the Ventana Wilderness and added land, totalling 98,000-acre (40,000 ha).
Relevant evidence: No