10/14/2026
Have you ever looked at the hills around Pepperwood and wondered how they got here? 🪨
Join us on Saturday, October 24, for Pepperwood Rocks! Geology of the Mayacamas, a hands-on field class with geologist Rebecca Perlroth. You’ll explore how faults, volcanoes, and the Franciscan Mélange shaped our landscape, and how geology influences the soils and plants that thrive here.
📅 Saturday, October 24, 2026, 9 am to 2 pm
📍 Meet at the Dwight Center
🎟️ $35 per person
Ages 12 and up welcome
This is a moderate to challenging hike of up to 3 miles. We’ll stop for lunch in the field, so please bring a trail-ready lunch to carry with you.
Rebecca is the Geology Department Chair at Santa Rosa Junior College and has taught field classes at Pepperwood for years. If you’d like some background before you come, watch her recorded presentation, Geology of the Mayacamas, on our YouTube channel: https://www.youtube.com/watch?v=v87ID7Fm568
Register here: https://www.pepperwoodpreserve.org/?event=pepperwood-rocks-geology-of-the-mayacamas-2&event_date=2026-10-24
In this class taught by Rebecca Perlroth, you will learn basic concepts of geology, earth history, and the rock cycle through a local lens.