Crystal Park

Yes. The Beaverhead-Deerlodge National Forest charges a day-use entrance fee per vehicle, collected on site. Crystal Park is day use only, with no camping in the collecting area, though Forest Service campgrounds sit along the Pioneer Mountains Scenic Byway.

Hand tools only. A shovel or trowel, a bucket and a screen or sifting box are what most collectors use, since the crystals sit loose in decomposed granite. Power tools and mechanized digging are not permitted, and tunneling is strictly prohibited because the loose grit collapses.

Quartz in several varieties. Crystals may be clear, cloudy, white, gray or purple, ranging from tiny points to specimens several inches across. Collectors particularly prize the purple amethyst and the gray smoky quartz that occur alongside the clear rock crystal.

Typically mid-June through mid-October, depending entirely on snowpack. The site sits at 7,800 feet on the Pioneer Mountains Scenic Byway, which is not plowed in winter. Call the Beaverhead-Deerlodge National Forest at 406-683-3900 to confirm before an early or late season trip.

Take Interstate 15 about 3 miles south of Dillon, turn west on Montana Highway 278 for 22 miles, then north on the Pioneer Mountains Scenic Byway, Forest Road 73, for roughly 17 miles to the signed entrance. The route is suitable for passenger cars in summer.

Not deep, which is part of the appeal. Crystals sit loose in decomposed granite, so most collectors work the top foot or two with a trowel or small shovel and screen the material. Tunnelling is prohibited, and the five-day-per-person season limit discourages anyone from excavating a single hole indefinitely.

Yes. The quartz here occurs clear, cloudy, white, gray or purple, and the purple amethyst and gray smoky varieties are what collectors prize most. Crystals range from tiny points to specimens several inches across, all weathered free of the Pioneer batholith granite.

Partly. The park includes a paved trail with benches and an overlook, and the facilities are described as universally accessible, which is unusual for a rockhounding site. The digging areas themselves are loose decomposed granite on uneven ground, so access to the actual collecting varies.

Forest Road 73, a 49-mile route through the Pioneer Mountains between Wise River and the Highway 278 corridor near Dillon, passing Crystal Park, Elkhorn Hot Springs and several Forest Service campgrounds. It is a seasonal road, snow-closed in winter, and the drive is a destination in itself.

The Forest Service does not publish a weight limit but controls collecting through a five-day-per-person season limit on digging, a hand-tools-only rule and a ban on tunnelling. The intent is personal, noncommercial collecting. Rules are posted on signs at the site and in brochures available there.

The advice that recurs is to look for where others have dug and then work the edges and below them rather than re-sifting the same tailings, since 220 acres means a lot of ground has never been touched. Collectors also mention screening rather than eyeballing, because small clear points disappear in granite grit, and working after rain when the dust settles and crystals catch light.

It comes up often as one of the better ones, for concrete reasons: the digging is hand work in loose material rather than hammering, there are picnic sites with tables and grills, toilets and a paved accessible trail, and almost everyone finds something. The cautions people raise are the elevation at 7,800 feet, the intensity of the sun, and the need to keep children away from any deep hole others have left open.