nature & planetWikipedia

Zion's canyon walls are Navajo Sandstone carved by a river, where three landscapes meet and bring unusual wildlife

the gist

Zion National Park in southwestern Utah sits where three distinct landscape regions meet: the Colorado Plateau, the Great Basin and the Mojave Desert. That junction, combined with four life zones ranging from desert to coniferous forest, supports a surprising range of plants and animals, including 289 bird species, 75 mammal species and 32 reptile species. Its signature Zion Canyon runs about 15 miles long and up to 2,640 feet deep, with reddish and tan walls of Navajo Sandstone cut by the North Fork of the Virgin River. The park also contains slot canyons and natural arches, and it drew nearly five million visitors in 2025. Human presence goes back roughly 8,000 years, with Basketmaker Ancestral Puebloan groups followed by Southern Paiute peoples, and Mormon settlers arrived in the late 1850s and early 1860s.

so what

Zion shows how a single river can carve a deep canyon through layered sandstone while the surrounding climate zones shape very different ecosystems within a few miles. Its popularity also makes it a useful case study in how national parks balance visitor numbers with conservation.

fun fact

The sandstone walls of Zion Canyon are colored by iron oxides, which give the rock its distinctive reds and tans.

Adapted from Wikipedia, the free encyclopedia · CC BY-SA 4.0

Image: Wikimedia Commons