Left Hand Brewing (Longmont, CO) celebrates 125 years of The Geological Society of America. The GSA is headquartered in Boulder, Colorado.
This year, the 125 anniversary meeting is being held in Denver, Colorado. Thus, the inspiration for the Field Assistant Ale. FA is actually Sawtooth Ale rebranded as a celebratory label. Most likely a one off change.
Availability: 12oz bottles