The Granite Dells are a staple of the Arizona Central Highlands. They are magnificent and a unique Prescott landmark. Have you ever wondered about them?


The unique formations of the Dells were formed through a process called spheroidal weathering which is weathering that occurs along the joint systems in the rock.

This weathering is chemical in nature and results from water entering the rock through cracks. For this to occur, the rock must be extremely decayed. Therefore, it is most common in granitic areas.

Additionally, this is how you get the characteristics of the Granite Dells such as the lone rocks teetering on the edges and the rounded, balloon-like surfaces.

Granite Dells

When were they formed?

The Granite Dells date back to the Precambrian era which accounts for 88% of Earth’s history.

This eon or supereon as it is sometimes referred to because its technically 3 eons combined into one, was not completely studied until the 1960s. However, much is still unknown about it due to erosion, weathering of the rocks, and how deep some of the material from this eon is buried.

Wildlife in the Dells

Moreover, many species thrive in the Dells. There are avians like eagles, hawks, owls, hummingbirds, and falcons. Likewise, you will find ground and tree dwellers like porcupines, squirrels, chipmunks, deer, mountain lions, bobcats, skunks, and javelinas.

javelina on a trail


There are a multitude of hiking trails that wind themselves through the Dells. The Peavine Trail is 11.9 miles long and visits the Dells throughout its journey. Flume Trail and Watson Lake Loop is a 1.6-mile path that meanders through the spectacular rocks. The Constellation Trails are another favorite- this trail system consists of multiple trails that venture in, up, down, and through the Dells. There are many other hiking and biking trails as well! Find more here

Additionally, there is a flurry of crags that are great for mountain climbing and bouldering found in the Dells. These mostly range in the Granite Gardens but are also below the dam near Watson Lake. For more info visit

One more Wonder Fact!

  • The Granite Dells contain a high amount of uranium deep within its rocks. Accordingly, the Dells omit Radon.

To learn more about the Granite Dells visit


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