Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Caribou-Targhee National Forest is located in the states of Idaho and Wyoming, with a small section in Utah in the United States. The forest is broken into several separate sections and extends over 2.63 million acres (10,646.15 km²). To the east the forest borders Yellowstone National Park, Grand Teton National Park and Bridger-Teton National Forest. Most of the forest is a part of the 20 million acre (81,000 km²) Greater Yellowstone Ecosystem.