📜 Large basalt rock carved by ancient peoples to map the upper Snake River area. 🔍 Designated a National Historic Site in 2012. # Why Go 🗺️ View ancient petroglyph map of Snake and Salmon Rivers 🦌 Depicts animals and tribes of the territories 🤔 Mysterious purpose, possibly for navigation or cosmic 🗿 Explore mysterious rock carvings and hundreds of other petroglyphs nearby # Why Avoid 🚫 No building or parking lot at site 🗺️ Can be difficult to find # Tips 🅿️ Pull over at a wide spot on Map Rock Road 👀 Look for orange windsock at airstrip across river as a landmark