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State Park · UT

Goosenecks State Park

One overlook, 1,000 feet above the San Juan's goosenecks, with a single motion-sensor light in the whole park.

San Juan River · Cedar Mesa · Bears Ears country

State Park 99 acres 5,200 ft high point Est. 1962 Utah Division of State Parks Dark Sky Park

Overview

Goosenecks is barely a park: a hundred acres of rim, a handful of primitive campsites, a pit toilet, and a view straight down a thousand feet onto the San Juan River doubling back on itself three times in a mile and a half. The meanders are entrenched — the river was already looping when the land rose under it, so it cut down in place and kept its curves. There is no water, no power, no shade and no services. There is exactly one artificial light in the entire park: a motion-activated safety fixture at the entrance station. That, and the emptiness of San Juan County around it, is why the park rates its own sky a Bortle 1 — the darkest claim anywhere in this project, though the way it was arrived at matters and we record that too.

Getting in

When to go

Best: Apr, May, Oct

Spring and autumn. Summer is savage — there is no shade at all. Winter nights are long, clear and very cold on an exposed rim.

Safety & conditions

Activities

Stargazing

Certified 2021. The park rates its own sky Bortle 1 and its SQM-L averaged 21.82 in 2020 — the darkest reading in this whole project. One motion-sensor light in the entire park.

Season: Year-round; new-moon windows best. It is exposed and there is no shelter.

The Bortle 1 is a map estimate, not an instrument reading. The 21.82 is real.

Camping

A handful of primitive sites on the rim. No water, no power, no shade.

Regs: First-come. Bring everything.

Hiking

There is no trail. There is a rim, and you stand on it.

Season: Year-round; brutal in summer.

Night Sky

Dark Sky Park Certified 2021 Bortle 1 21.82 mag/arcsec² across 4 sites

There is essentially nothing to move the number except the sky itself: moon, haze, and smoke. The park has ONE artificial light — a motion-activated safety fixture at the entrance station — and San Juan County around it is close to empty. What you get here is what the sky is doing.

What the sky does here

  • Typical

    Bortle Class 2: The Wilderness Has Its Own Light

    Under a Class 2 sky, darkness is nearly natural yet the landscape remains emotionally legible. The Milky Way becomes architecture, still water can carry a second sky, and the night feels less alien than complete.

  • Only when

    Bortle Class 1: Too Many Stars to Find the Stars We Knew

    On a moonless, smoke-free night on the rim — the park rates itself Bortle 1 and its meter reads 21.82, the darkest in this corpus. But the class is a map estimate, not a measurement, and we say so.

Geology

An entrenched meander: the San Juan was already looping across a flat plain when the Colorado Plateau began to rise. It cut downward faster than it could straighten, so it kept its curves and carved them a thousand feet into the rock. Three hundred million years of Pennsylvanian rock in the walls.

Province: Colorado Plateau — Monument Upwarp

Rock types: limestone, sandstone, shale

Major formations

Ecology

Biomes: Colorado Plateau desert shrubland

Flora

  • blackbrush
  • Mormon tea

Fauna

  • kit fox
  • kangaroo rat
  • bats
  • coyote
  • burrowing owl
  • scorpions

The application makes a point of it: this is a nocturnal haven, and the animals depend on the darkness. There is one motion-sensor light in the whole park.

History

Goosenecks sits within the ancestral homeland of the Navajo, Ute and Ancestral Puebloan peoples, whose relationship to the San Juan country continues today. It became a Utah state park in 1962.

Modern issues

  • Almost nothing to protect it from

    Status: stable

    As of: 2026-07-13

    One motion-sensor light in the park and an almost empty county around it. The threat here is regional, not local.