Right across the street, actually.

We are located on the East side of the dunes on Red Road.

We are approximately 9 miles from the Rexburg North exit of Hwy 20. You can find a google map to the park on our “maps” page at the bottom of the website.

Our entrance/driveway sits across the street from the dunes and is about a 6-8 minute ride to Thunder Mountain.

If all goes well, our anticipated opening date will be April 30, 2026. Follow us on your social media platform of choice to find out when that will be. When we know - YOU’ll know!

Reservations are currently open and available to book while the park is under construction. We have been working incredibly hard to have all as many amenities available to you at opening as possible, though some will come with time.

Unfortunately the short answer is no, but this is for a couple reasons…

1. The agreement we have with Fremont County for approvals for the park is that Sand Box RV will maintain ownership, rights and sole management to each individual site. The County will not allow it.

2. We also aren’t selling sites simply because we’re not interested in sharing site ownership. Simple as that. It creates some dynamic that we don’t want to also have to manage.

But rest assured we will have tons of space for everybody to have a spot. Initial development includes 125 sites (a combo of single sites and group sites - all of which will be huge), but that only covers a small portion of the property. When we have the need for more sites, we have left ourselves the option to expand to accommodate as much as four times as many.

Every group site and every single site will have hookups for 50 amp power and water.

Single sites will have a single power pedestal and a shared water hydrant with the adjacent site. Group sites will have two power pedestals and water, Double Pull through sites will have two pedestals and Super Sites will have three power pedestals. We will not have sewer hookups initially (this is a possibility down the road, but we have to allocate funds to opening the park and this added expense is not a priority for opening). We do have a 2 lane RV dump station.

We are looking into a portable pump-out service that will come to your camp to empty black and gray tanks for your longer stays. This amenity will not be available at opening, but a possibility in the future.

Single Sites 35×70

Single Premium 35×90

Double Pull through: Includes Single Site + Single Premium Site with 50 shared space between.

Group Site: 70×70

Super Sites: We have two different Super Sites that range from 8k square feet to more than 10k square feet.

All to say our sites are HUGE!

As of today, March 2026 we are finishing the interior construction of the building, landscaping and grading all exteriors and beginning to finalize all initial park amenities.

We spent the winter building out the interior of the building that includes the mechanic shop and general store, check in desk and guest bathrooms and showers.

Prior to winter we dug through hundreds and hundreds and hundreds and hundreds of hours of lava rock. Sites are designated, laid out, plumbed, powered and are currently being graded.

Each of our designated camp sites will be equipped with 50 amp power and water.

Single Sites will have a single power pedestal, Group sites and Double Pull Through site types will have two 50 amp power pedestals, and Super Sites will have three power pedestals.

Each site will also have a water hydrant shared between the two adjacent sites.

There will also be a fire pit and picnic table per site.

Some sites will be pull-through, some will be back -in (or pull in) sites. Each site will be partitioned so site boundaries are clearly marked.

Yes. We have a designated area of about 2 acres specifically reserved for dry camping and overflow when sites are full.

The BLM had previously closed dune access from our location so it’s not well known access point. Recently (and for the first time since 1976) the BLM has opened up this access point for our use. This access trail is just across the street from the Sand Box RV entrance and a quick 10 minute ride to Thunder Mountain.

There’s a map you can see the layout on our maps page at the bottom of the site.

Absolutely. We have already hosted UTV Invasion August 2023, and 2024, with plans to host again. We have also hosted OHV dealer trainings, and plan to host many, many events of all kinds.

We are also making arrangements with several other large companies to host their annual events as well. As those plans are finalized, we will be announcing each individually and adding them to events calendar so you always know the best times to come stay with us.

You can find any events planned on our event page here.

If you are a business that would like to host an event at our location, we’d love to hear from you. You can contact us through the “ideas” portal here. Just let us know who you are, and what type of event you host. We are open to considering all sorts of styles of events.

We are a pet-friendly facility as long as you’re bringing friendly pets. Our large, fenced and grassy pet area is the perfect spot for your 4 legged friend to run around unleashed (at your own discretion and risk, of course).

If your pet is not friendly, or causes an issue, you will be required to keep your pet inside your rig while at the park. If a pet is left unattended and is crying or barking disturbing other campers, that’s not considered ‘friendly” and we’ll have to send the boys over.

Don’t do that. Nobody wants that.

More Info

While we love local campers as much as we love our traveling campers, we will not have a lower discounted rate for locals.

We invite everybody and anybody to come stay with us from wherever it is you call home.

Our sites will be at amazing rates so it’s low for everybody.

Or - I guess you can say YES, we’ll have lower rates for locals, but non-locals will get them too! We love everyone equally.

We are currently working on amenities for those traveling to see us who don’t have their own accommodations. We would like to have a designated area for micro mini mega mansions to rent for your trip to South East Idaho. These micro mini mega mansions will not be available at park opening in April 2026, but is something on our priorities list for soon thereafter.

Yes. We will have restroom and shower facilities on site for Sand Box patron’s use only.

ADA compliant restrooms and showers will be included.

Sand Box amenities are reserved for Sand Box patrons only.

In the event that a large scale event is happening on property, all available amenities will be closely monitored for patron use only.