In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.

Castle Rock Mountain (12406 ft ) is in the Beartooth Mountains in the U.S. state of Montana. The peak is one of the tallest in the Beatooth Mountains, the tenth-tallest in Montana and is in the Absaroka-Beartooth Wilderness, on the border of Custer and Gallatin national forests. The nearest taller mountain to Castle Rock Mountain is Castle Rock Spire, 0.65 mi east. Castle Rock Mountain is flanked by the Sundance Glacier to the north and the Castle Rock Glacier to the south. Question: Castle Rock Mountain is in a wilderness created from existing National Forest lands in 1978 and is composed of how many acre? Answer: 944,000
Castle Rock Mountain 12406 ft is in the Beartooth Mountains in the U.S. state of Montana.