Observe and speak with a Paleontologist at work!
2026-03-25 09:00 - 12:00 (America/Phoenix) | Petrified Forest National Park Visitor Center, 1 Park Rd, Petrified Forest, AZ, 86028, United States
The Museum Demonstration Lab at the Painted Desert Visitor Center is where you can see one-of-a-kind fossils from Petrified Forest National Park being prepared by trained paleontologists! Peek through the window to see fossils from the museum collection. Watch a live microscope feed on the TV as paleontologists remove rock from fossil bone. Chat with scientists via a two-way, hands-free speaker.

History Walk, Grand Central Mill
2026-03-28 09:00 - 11:00 | Fairbank School House, Huachuca City, 85616, United States
Take a walk to the ruins of the historic Grand Central Mill. During the Tombstone silver boom, this stamp mill operated 24 hours a day, processing ore brought from Tombstone by wagons. Learn about the mining history of the area during a three-mile round trip walk to the mill site. This walk follows an uneven dirt and gravel trail. Please realistically assess your ability to do this walk. There is limited shade, and it will be hot on sunny days. Wear a hat, sun protection, appropriate clothing, and sturdy shoes. Bring water and snacks.
All walks are free, no reservations required. Participants must sign a liability waiver before the walk starts. This tour meets at the Fairbank Townsite, which is along Highway 82, 10.0 miles east of the Highway82/90 intersection in Whetstone. The entrance to the parking area is on the north side of the highway about 0.5 mile east of the San Pedro River bridge. The tour will meet near the Schoolhouse Museum.
Park in the outer lot and use the fenced trail to walk to the Schoolhouse. “Fairbank AZ” is directly searchable in Google Maps. For more information, call (520) 508-4445 or email fspr@sanpedroriver.org. Hosted by the Friends of the San Pedro River.

History Walk to Murray Springs
2026-04-04 09:00 - 11:00 | Murray Springs, N Moson Rd, Sierra Vista, 85635, United States
Join docents from the Friends of the San Pedro River for a tour of the Murray Springs mammoth kill site. Discovered by Dr. C. Vance Haynes from the University of Arizona in 1966, Murray Springs contained not only fossils from mammoth killed by the prehistoric Clovis people, but also projectile points and a bone tool believed to be used to straighten spear shafts. This is an easy walk of less than a half mile, though it does include dirt steps into and out of a dry wash. Please realistically assess your ability to do this walk. The walk is free; reservations are not required. Participants must sign a liability waiver before the walk starts. From E. Highway 90/AZ-90 in Sierra Vista, drive north on Moson Rd. for 1.28 miles and turn east. Meet the docent at the gate to the site. The entrance to the site is searchable as “Murray Springs Clovis Site” in Google Maps.

Romero Site Interpretive Hike
2026-04-06 09:00 - 10:30 | Catalina State Park, 11570 N Oracle Rd, Tucson, 85737, United States
Join local guides for a tour of the Romero site and walk through 1000-years of indigenous Hohokam history in 90-minutes! Learn about the area’s ranching history and how the Hohokam made a living in the desert. Note: This trail has stairs and crosses a seasonal stream; be prepared to walk in ankle-deep water. No restrooms on-site. Meet at the Romero Ruins Ramada.
Limited to 20 people: First Come, First Served
There is no cost to this program, but park entrance fees apply or bring your Arizona State Parks annual pass.
