February 2, 2022 Online starting at 8PM EST.
Pat Hallam-Mark, will be giving a presentation on the geology and geologic history of Yellowstone National Park as inspired by her picturesque trip to the National Park in October of 2021. Pat is an amateur Geology, Mineralogy and Gemology buff who is a member of the GMCS and a leader with the YTMC. She likes to combine her passion for Geology with travel whenever she is able.