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Geologic formation in Emery County, Utah, United States

San Rafael Swell — Black Boxes

Two of Utah's darkest slot canyons on the San Rafael River — technical wading and possible swims.

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Where on earth

Satellite imagery flying in from a world view to San Rafael Swell — Black Boxes, United States. Use the + / − buttons, or click the map to zoom with your scroll wheel; drag to pan and pinch to zoom on touch.

Region
Utah, USA
Country
United States
Biome
Slickrock slot (1,500 m)
Best season
April – May, September – October
Difficulty
moderate
Known for
  • Backpacking
  • Hiking
  • Mountaineering
  • Desert Hiking
  • Canyoneering
  • Canoeing
  • Fishing

Key takeaways

  • Biome: Slickrock slot (1,500 m)
  • Best season: April – May, September – October
  • Difficulty: moderate
  • Top activity: backpacking
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Photos of San Rafael Swell — Black Boxes

The San Rafael Swell is a large geologic feature located in south-central Utah, United States about 16 miles (26 km) west of Green River. Measuring approximately 75 by 40 miles, the swell consists of
Photo: Wikipedia contributors · See Wikimedia Commons

Topic summary

Two of Utah's darkest slot canyons on the San Rafael River — technical wading and possible swims.

Key takeaways

  • Difficulty: moderate
  • Best season: April – May, September – October

Intended uses

backpacking

Climate suitability

Slickrock slot (1,500 m)

Region
United States
Biome
Slickrock slot (1,500 m)
Difficulty
moderate

Tools for a trip here

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backpacking

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San Rafael Swell — Black Boxes trip tools

How to get there

San Rafael Swell — Black Boxes is in Utah, USA, United States. Its center point is 38.9089, -110.7458. Use these links for live turn-by-turn directions from where you are, then confirm road, trailhead and access conditions with the managing agency before you leave.

Popular pursuits at San Rafael Swell — Black Boxes

  • Backpacking

    Multi-day travel with everything on your back — see the packing blocks below.

  • Hiking

    Day miles on marked trail, with route notes and trail links below.

  • Mountaineering

    Glacier and high-route objectives with real consequence.

  • Desert Hiking

    Water carries and heat management drive the plan.

  • Canyoneering

    Narrows, downclimbs, and flash-flood timing.

  • Canoeing

    Paddle routes, portages, and put-ins.

Animals around San Rafael Swell — Black Boxes

Browse all wildlife guides →

Maps, GPS & compass for this trip

Carry a waterproof paper map and a compass you can steer by, and treat the GPS as the backup — not the other way round. Buying links go to Amazon; Wild10 earns a commission at no cost to you.

Fishing at San Rafael Swell — Black Boxes

Planning to fish San Rafael Swell — Black Boxes, Utah? Fishing licenses, open seasons and catch limits in Utah are set by the local wildlife authority and change every year — check the official source before you cast a line.

Do I need a fishing license at San Rafael Swell — Black Boxes?

  • A Utah fishing license is normally required for anyone over the local youth age.
  • Read the current Utah fishing regulations for special waters, barbless-hook or catch-and-release rules.
  • Clean, drain and dry boats and gear between waters to stop invasive species.

Hunting near San Rafael Swell — Black Boxes

Thinking about hunting San Rafael Swell — Black Boxes, Utah? Hunting seasons, tags and draws in Utah are set by the wildlife authority each year. Confirm the rules for your species and unit before you go.

Is hunting allowed at San Rafael Swell — Black Boxes?

  • Confirm the land around San Rafael Swell — Black Boxes is open to hunting and which management unit it falls in.

What do I need to hunt in Utah?

  • A Utah hunting license — most jurisdictions also require hunter education certification.
  • Species tags or draw results for big game such as deer, elk, moose or bear where they occur.
  • Knowledge of firearm and bow transport rules, which differ by land type and border crossing.

Setting and planning scope

San Rafael Swell — Black Boxes is the requested destination in Utah, in the Mountain West of the United States. Utah is landlocked and belongs to the Four Corners group of states, alongside Arizona, Colorado, and New Mexico. That statewide setting provides geographic context, but it does not establish the character of a particular outing at Black Boxes. A usable trip plan still needs a verified destination location, an approach, and a route description. Treat this profile as a planning placeholder rather than a field guide. There is not enough confirmed destination-level information here to describe the terrain, recommend an itinerary, or identify a suitable starting point without risking misleading directions.

Access and route planning

Access to Black Boxes needs to be established before choosing a route or setting a departure time. No specific trailhead, road approach, parking location, or route distance can be confirmed here. Driving times and route difficulty are likewise unconfirmed, so neither should be estimated from the destination name or from Utah’s broader geography. Before traveling, obtain a current map and a destination-specific description that identifies the intended starting point and how the outing ends. Confirm that the approach matches the route being considered, rather than relying on a similarly named location. Until those details are settled, this profile should not be used for navigation or to judge whether an outing fits a group’s abilities.

Conditions and preparation

Utah’s challenging geography and harsh climate make local conditions an important part of outdoor planning. The state has also experienced droughts of increasing frequency and severity, with consequences for water security. Those statewide facts do not establish water availability, weather, or seasonal suitability at Black Boxes. Check a local forecast and confirm water arrangements for the actual outing instead of assuming supplies will be available. Clothing, equipment, and the amount of water carried should follow a verified route description and current conditions. No destination-specific hazards or preferred travel season can be confirmed here. Before committing to travel, confirm current access requirements with the managing agency and resolve the missing route details.

Sample itineraries

  • One-day visit planning · 1 day

    Treat this as a planning outline, not a verified Black Boxes route. Before committing to a day visit, confirm access, route difficulty, travel time, and current conditions with the managing agency.

  • Two-day visit planning · 2 days

    Use the first day for local condition checks and preparation. Keep the second day conditional on verified access and a route suited to the group. No overnight location or through-route is established here.

Seasonal conditions

Spring

Confirm locally

Black Boxes spring conditions are not established here. Check current weather, water conditions, and access before choosing travel dates.

Summer

Confirm locally

No destination-specific summer guidance is established here. Utah faces increasing drought pressure; do not assume drinking water will be available.

Fall

Confirm locally

A preferred fall travel window cannot be established here. Verify weather, water conditions, and route suitability before departure.

Winter

Confirm locally

Winter access and route conditions are not established here. Obtain a current local assessment rather than assuming the route is usable.

Permits, fees & closures

Confirm permit requirements and access rules with the managing agency before visiting.

Confirm current permits, fees, and closures with the managing agency before you go.

Hazards & regulations

  • Regional water uncertainty: Utah's increasingly frequent and severe droughts put pressure on water security. Carry drinking water rather than relying on an unverified supply.
  • Regional climate caution: Utah is described as having a harsh climate. Destination-specific weather exposure must be checked before travel.
  • Regional terrain caution: Utah's geography can be challenging. Black Boxes route difficulty and required skills are not established here; obtain verified route information before entering.

What to pack for San Rafael Swell — Black Boxes

Water planning
  • Drinking water sufficient for the verified outing
  • Water containers
Weather preparation
  • Layers selected for the current local forecast
  • Weather protection appropriate to confirmed conditions
Route preparation
  • Verified route description and map
  • Equipment matched to confirmed terrain and route requirements

Build this list in the gear builder →

San Rafael Swell — Black Boxes FAQ

Where should a Black Boxes trip start?
No trailhead or access point is established here. Confirm the correct approach and current access with the managing agency before navigating to the destination.
How long is the route?
A route distance or reliable travel time cannot be established here. The planning outlines are not confirmed route durations.
Is this suitable for beginners?
Suitability cannot be assessed without verified terrain, water conditions, and technical requirements. Do not interpret missing difficulty information as evidence of an easy outing.
What is the best season to visit?
No destination-specific seasonal recommendation can be established here. Choose dates only after checking local weather, water conditions, and access.
Can drinking water be collected along the route?
No reliable drinking-water source is established here. Utah's drought pressures support a conservative approach: plan to carry what the verified outing requires.
Are wildlife encounters described for this destination?
No destination-specific wildlife information is established here. Ask the managing agency about current wildlife concerns and food-storage guidance.