A 1956 Idaho history textbook says: "Idaho" is a Shoshoni Indian exclamation. The first is "Ee", which in English conveys the idea of "coming down". Idaho also shares a short border with the Canadian province of British Columbia to the north.The second is "dah" which is the Shoshoni stem or root for both "sun" and "mountain". The landscape is rugged with some of the largest unspoiled natural areas in the United States.The official state nickname is the "Gem State", which references Idaho's reputation for gemstones and, more broadly, its many wilderness areas.In the early 1860s, when the United States Congress was considering organizing a new territory in the Rocky Mountains, eccentric lobbyist George M.
Despite this lack of evidence for the origin of the name, many textbooks well into the 20th century repeated as fact Willing's account the name "Idaho" derived from the Shoshone term "ee-da-how". The states of Washington and Oregon are to the west, Nevada and Utah are to the south, and Montana and Wyoming are to the east.
The county was named after a steamship named Idaho, which was launched on the Columbia River in 1860.
It is unclear whether the steamship was named before or after Willing's claim was revealed.
The Port of Lewiston, at the confluence of the Clearwater and the Snake Rivers is the farthest inland seaport on the West Coast at 465 river miles from the Pacific at Astoria, Oregon.
Idaho's highest point is Borah Peak, 12,662 ft (3,859 m), in the Lost River Range north of Mackay.