Idaho History: Pre-1800s

	17million ya The Yellowstone hot spot first appears about 17 million years ago with rhyolite eruptions on the Owyhee Plateau of southeast Oregon and northern Nevada. The hot spot slowly migrates across southern Idaho to its present-day position t Yellowstone National Park.	MORE INFORMATION: * Topographic Development * Snake River Plain * Rocks, Rails & Trails: Chapter 2 & Section 6
MORE INFORMATION: * The Lake Bonneville Flood	15,000 ya Approximately 15,000 years ago Lake Bonneville, a late Pleistocene lake covering more than 19,691 square miles, suddenly discharges an immense volume of water to the north along Idaho's Snake River Plain.
.	8000 to 14,000 ya Paleo-Indian big game-hunters, with Clovis (11,500 to 12,500 B.P), Folsom (10,500 to 11,000 B.P), and Plano (8,000 to 10,500 B.P) cultures.	MORE INFORMATION: * Native Americans in Idaho
MORE INFORMATION: * Native Americans in Idaho	200 to 8,000 ya Archaic-Indian culture, with permanent houses (5,000 years ago) and bows and arrows and pottery (300 to 1,500 years ago) coming into use.
.	200 to 260 ya Shoshone bands obtained horses for transportation but were decimated by smallpox spread from European sources.	MORE INFORMATION: * Native Americans in Idaho
MORE INFORMATION: * Exploration & Expansion	1743 Discovery of the Rocky Mountains somewhere in the vicinity of Yellowstone Park made by Pierre De la Verendrye, while in search of a western sea.	.

ya = years ago