
Return of the Pine Canyon Peregrines
2020

Morgan Territory
2020

The Falls Trail
2019

Harvest of Fire
2019

Rock City
2018

Plants of Twin Peaks
2018

Black Diamond Mines
2018

A Geology Tour on the Mary Bowerman Trail
2017

Introducing Mount Diablo
2017

Mitchell Canyon
2017

Trail Through Time
2016

Perkins Canyon
2014

Los Vaqueros
2014

Curry Point
2012

Lime Ridge
2012

Round Valley
2012

Grand Loop
2010