Guangzhou, , Mar 08, 2011 — Vermont artist Thea Alvin has been a professional stone mason for 25 years, and mostly uses dry stone stacking to create sculptures and landscape installations. Her works include stunning stone arches, walls and ornamental spirals. Alvin will be at St. Lawrence University later this month as part of a week-long focus on Climate Change and Environmental Justice. Her challenge is using recyclable materials (shopping carts and soda cans) to create arches and a small house on campus. Thea Alvin has traveled around the world teaching, building and learning from master masons. She spoke with Todd Moe about a life-long respect for rocks.