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 "Aniakchak National Monument and Preserve"): The 601294 acre monument is one of the least-visited places in the National Park System due to its remote location and difficult weather.
Relevant evidence: No