Located far from any ocean, the St. Anthony Sand Dunes appears as a rolling sea of sand on the eastern edge of Idaho’s volcanic Snake River Plain. These vast dunes are the largest in Idaho. They blanket an area approximately 35 miles long and 5 wide and range from 50 to 400 feet high. This 10,600-acre playground of shifting, white quartz sand is known for its unique beauty and exceptional space for off-road vehicle (ORV) enthusiasts, hikers and equestrians. Picnicking, snowmobiling, wildlife viewing and camping opportunities are also available. The best time to visit is spring through fall. Summer temperatures cause sands to reach over 100 degrees. The area features Deadhorse Bowl, a popular ORV sand bowl one-mile in circumference and 400 feet deep, located in the western section of the dune complex.
Facilities: There are 3 graveled parking areas, ATV unloading ramp, equestrian trailer area, restrooms, RV dump station, concessions, water stations, and picnic tables.
Contact station area: Law enforcement, EMS, and Idaho Air Rescue
Regulations: Safety flags, annual ORV sticker; designated routes, ride only in open sand and observe all posted signs; no glass containers; all riders under age 18 must wear helmets (ID state law).
The Egin Lakes Campground offers a potable water system, RV dump station and 48 improved camp units, including electrical service. Campfires are only allowed in designated areas--Citations will be issued for illegal burning.
Camping Fees: Camping $25-$60/day, according to size of camping unit and amenities, $10.00 per use of RV dump stations. At this time, there is not a reservation system in place for the campsites. Campsites are on a first come first serve basis.
Day Use Fees: $5.00 per vehicle/per day or there is a $60.00 season pass--can be purchased from camp host at Egin Lakes or at the Upper Snake Field Office in Idaho Falls.
Closure Information: The riding area on the west side of St. Anthony Sand Dunes, west of Egin Lakes Campground (aka. "the big dunes") are closed from January 1 through sunrise on April 1. The area south of Egin - Hamer Rd is also closed from January 1 through sunrise April 1. The areas completely surrounding the the open sand of the St. Anthony Sand Dunes are closed from January 1 through sunrise on May 1. The smaller dunes, east of Egin Lakes Campground to Red Road are open year-round, but are usually covered in snow by January 1.
Bring your walking shoes and flip flops. There is some small walks through the sand and around the lake.
The beach area is nice and can get pretty busy on the weekends. Be careful though, if you swim in the water, there are leaches. But if you stay on the shore edge they won’t bother you.