Best spot

Dismal Swamp — Rockhounding in Elmore County, Idaho

Dismal Swamp is a focused Elmore County locality for smoky quartz and topaz, both listed for the area by Idaho Department of Lands and Mindat. It is a more mineral-specimen-oriented choice than many Idaho agate fields, with quartz-family collecting tied to the Rocky Bar mining district and nearby granitic terrain. Reported finds include smoky quartz, topaz. Below: coordinates, access notes, nearby spots, and trip-planning links.

Dismal Swamp photos

Public image records connected to this spot or its reported material, with source and license attribution.

4 photos

Map showing Dismal Swamp in Elmore County, Idaho

Quick details

Access
Public area
State
Idaho
Nearest road
Trinity Ridge Road

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

State guidance last verified:

Found at Dismal Swamp

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Dismal Swamp.

Dismal Swamp FAQ

Why is Dismal Swamp one of the best rockhounding spots in Idaho?+
Dismal Swamp is a focused Elmore County locality for smoky quartz and topaz, both listed for the area by Idaho Department of Lands and Mindat. It is a more mineral-specimen-oriented choice than many Idaho agate fields, with quartz-family collecting tied to the Rocky Bar mining district and nearby granitic terrain.
Where is Dismal Swamp?+
Dismal Swamp is in Elmore County, Idaho, at 43.72904, -115.36641. Nearest road: Trinity Ridge Road.
What rocks and minerals can you find at Dismal Swamp?+
Dismal Swamp is reported to produce Smoky Quartz, Topaz.
Is collecting allowed at Dismal Swamp?+
Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.
How do I get to Dismal Swamp?+
Open the directions link to navigate to 43.72904, -115.36641 in Google Maps. The nearest road is Trinity Ridge Road.

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