Skip to main content

Main navigation

Submenu - Parks

- Arizona
- California
- Colorado
- Kansas
- Montana
- Nebraska
- Nevada
- New Mexico
- Oklahoma
- Texas
- Utah
- Wyoming

Ornate clay pots with intricate, colorful patterns.

Visit The National Parks Store

Submenu - Things To Do

- Junior Ranger programs
- Ranger programs
- Youth programs

A hiker on a rocky trail at sunset with a backpack, mountains in view.

Discover activities from over 70+ parks

Submenu - Plan

Woman smiling, leaning out of van window, ocean background.

Not sure which park is right for you?

Support parks

Overview
Funds at work
Donate
Park Protector®
Ways to give
Volunteer
Become a sponsor

Children cleaning a park, two girls in the foreground smiling.

Support the places you love

Tonto National Monument

Why Did the Gila Monster Cross the Road? (Year 1)

Year

2005

Investigator

Erika Nowak

Subjects

Herpetology

TONT-Research-2004-15-Why-Did-the-Gila-Monster-Cross-the-Road-Year-1.pdf

Why Did the Gila Monster Cross the Road? (Year 1)

Desert landscape with saguaros and sunset over distant mountains.

Join the community

Receive updates on park events, promotions, and new product drops.

Social

Facebook
Instagram
LinkedIn
YouTube

Western National Parks (WNP) is a nonprofit education partner of the National Park Service. WNP supports parks across the West, developing products, services, and programs that enhance the visitor experience, understanding, and appreciation of national parks.

About WNP

About us
Newsroom
Annual reports
Our team
Our partners
Join our team
History
National Park Service

What we do

Overview
Research
Retail with a purpose
Publishing
Education
Community engagement
WNP awards, grants & scholarships

Our impact

Funds at work
Park visitor experience
Cultural heritage
Outreach & community engagement
Park research & preservation

Get in touch

Contact us

The National Parks Store at Western National Parks

12880 N. Vistoso Village Dr.
Tucson, AZ 85755

Open daily 10 AM—5 PM 
520-622-1999

Donate

Become a Park Protector®
Donate

Copyright

Sitemap
Terms of use
Privacy policy

© Copyright 2025 Western National Parks | All rights reserved

Western National Parks is a qualified 501(c)(3) tax-exempt organization. Tax identification number: 86-0107049