THUNDER MOUNTAIN / ROOSEVELT
Ghost Town — Yellow Pine, Idaho
Status: SUBMERGED · Access: Open to public
Dossier: https://haunthunt.com/place/thunder-mountain-roosevelt-yellow-pine-idaho/

The mining town swallowed by a lake and a landslide.

A ghost town in Yellow Pine, Idaho, Thunder Mountain / Roosevelt is filed here for what the record attaches to it. The mining town swallowed by a lake and a landslide. HauntHunt files it with ghost towns, dark history and local folklore. The dossier holds 1 reported claim, 1 legend and 2 documented facts, with the verified spine filed separately from the lore. It lies underwater; the file is as close as most will get.

Thunder Mountain is Idaho's last gold rush — the 1902 stampede to the Salmon River range where the Caswell brothers found the rich streak on Mule Creek. Roosevelt was the boomtown — named for the president, fourteen saloons and ten stores in tents and logs, the district's supply hub. The mountain got its name from the Indians who gave it wide berth — the thunder that seemed to come from inside the peaks.
The town drowned slowly — the mines closed 1908, the mudslide came May 1909, damming Monumental Creek over thirty-six hours and filling the valley. Roosevelt Lake is what's left — the buildings' outlines visible on calm days, the tram towers still standing where the ore cables ran. The ghost town that's a lake is the rush's monument — the boom that lasted seven years and ended underwater.
The file keeps Thunder Mountain/Roosevelt: the 1902 rush, the 1909 mudslide, the submerged town, and Roosevelt Lake.
Thunder Mountain is the archive's drowned-town file — the boomtown under the lake it made.

WHY THIS FILE MATTERS
Thunder Mountain is the archive's drowned-town file — the gold rush that ended in a lake.
A town keeps its drowning — the file's suggestion being that Roosevelt's hold is the submergence: the mudslide that dammed the creek, the buildings still visible underwater, and the rush that produced a lake instead of a city.

FILED CLAIMS — 1 on record, reported not verified
· [Local folklore] apparition: Fishermen and hikers report figures near the lake and a presence in the cemetery. In a place where the population already left once, the remaining reports at Thunder Mountain / Roosevelt feel almost inevitable. Local lore carries the account; no documentation has ever caught up with it. The report is preserved in sources like 'Thunder Mountain, Idaho'. The figure remains the site's most-repeated sighting.
  source: Thunder Mountain, Idaho (https://en.wikipedia.org/wiki/Thunder_Mountain,_Idaho)

HISTORY — 2 documented facts
· An archived 1937 Forest Service photograph documents the former 1890s mining town under Roosevelt Lake. The town's documented rise and abandonment is the record the rest of the file stands on. This belongs to the verified spine of the entry, the layer everything else is measured against. The detail is preserved in 'Old town of Roosevelt, Idaho Primitive Area'. The entry's timeline holds it; the lore holds the rest.
· The 1909 landslide flooded the town; the site is beneath Roosevelt Lake. Thunder Mountain / Roosevelt's history is documented — boom, bust, and desertion all on record, the lore layered on top. It's verified history: the dossier's load-bearing detail. The detail is preserved in 'Thunder Mountain, Idaho'. Documented ground is what separates this file from pure legend — this is part of it.

SOURCES — 2 cited
· Old town of Roosevelt, Idaho Primitive Area — University of Idaho Library
  https://www.lib.uidaho.edu/digital/archivalidaho/items/archivalidaho441.html
· Thunder Mountain, Idaho — Wikipedia
  https://en.wikipedia.org/wiki/Thunder_Mountain,_Idaho

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HauntHunt is a research archive. Claims are filed as reported — documented where sources exist, marked as folklore or unverified where they do not.
Methodology: https://haunthunt.com/methodology/ · Corrections: https://haunthunt.com/report/