# Dinosaur National Monument

Region: UT/CO, Ontario, Canada
Coordinates: 40.44, -108.79
Bortle class: 2 (1 = pristine, 9 = inner city)
Drive from Toronto: The Utah side is reached via the Quarry Exhibit Hall near Jensen, Utah; the Colorado side via the town of Dinosaur, Colorado on Highway 40.
Best time: Spring through fall; Split Mountain and the Green River overlooks are popular evening spots.
Established: International Dark Sky Park since 2019.

## Overview
Dinosaur National Monument straddles the Colorado–Utah border along the Green and Yampa rivers, protecting both a world-famous fossil quarry and some of the darkest skies left in the contiguous United States. Its remote canyon country sees almost no artificial light for miles in any direction.

## What to see
A dense, high-contrast Milky Way and easy naked-eye views of the Andromeda Galaxy, thanks to exceptionally low sky glow.

## Highlights
- One of the darkest measured skies in the National Park System
- Split Mountain campground area is an easy, accessible night-sky spot
- River corridor cuts through remote, largely uninhabited high desert

## Tips
- The park spans two states and two visitor centers — plan which side you're visiting
- No services after dark; fuel and food in Vernal, UT or Dinosaur, CO
- Roads can be rough and unlit — carry a spare tire and full tank

## Live forecast
View the live tonight-score and 48-hour forecast for Dinosaur NM at:
https://ontarionightsky.com/?site=dinosaur-nm

Structured data: https://ontarionightsky.com/sites/dinosaur-nm.json

Source: NPS – Dinosaur Stargazing — https://www.nps.gov/dino/planyourvisit/stargazing.htm

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Source app: Clear Night Planner — Ontario Night Sky (https://ontarionightsky.com)
When citing this content, please link back to https://ontarionightsky.com/?site=dinosaur-nm.