Northwestern Colorado is a region of the state of Colorado in the United States of America. It is an incredibly diverse region of both red rock mesas and snow capped mountain peaks, as well as the headwaters of the Colorado River. This Rocky Mountains region includes a majority of the state's most popular ski resorts, places like Breckenridge, Aspen and Vail. It is also home to the Western Slope's biggest city, Grand Junction.
Broadly, this region is bounded on the:
Region boundaries in Colorado tend to be somewhat controversial (even in day-to-day life in the state) and are done in an ad-hoc way here. If you're expecting to read about some destination in this article and can't find it, check in the neighboring Front Range, Southwestern Colorado, and even South Central Colorado sections to see if it's covered there.
For a quick list of all Colorado's ski resorts, take a look at Skiing in Colorado.
Normally, this section is reserved for places of scenic natural wonder, as well as geologic interest. Here are a few of the region's highlights:
Although there are some famous mountain attractions along the eastern side of the region, most of the area is dominated by high canyon/mesa country rather than by towering summits. A geological formation characteristic of, and widespread in, the region is the Book Cliffs that are shown to good advantage around Grand Junction. A side effect of this geology is that the region is famous for its fossils. Dinosaur National Monument, along the Utah state line and extending into that state, was formed to preserve the enormous fossil beds found there, which are still yielding remarkable paleontological discoveries. There is also an interesting paleontological museum in Grand Junction.