"Tom, what a privilege and joy it was to be part of your first Missoula flood tour! It opened my eyes to a subject I knew little about but now am very interested in. I have no doubt that your business will florish quickly. You are easy to listen to, so knowledgeable, quick to answer questions, with a wry sense of humor to boot. I highly recommend this tour both to beginners in geology and to the more advanced. Terrific!"
"Interesting, informative, educational, explanatory, truly enjoyable personal guide."
"Tom is extremely knowledgeable and very easy to understand. Everyone in the group of 7 that went were very happy we did. Once you do this tour you look at your surroundings with a knowledge of how they were formed. What a great history lesson from so many years ago. I would definitely recommend taking this tour. You will enjoy meeting and getting to know Tom."
"A learning and interesting tour. Tom Stephan was patient with my repeated questions. A hands on field trip for sure. I highly recommend. Tom definitely knows his stuff."
"Tom, what a privilege and joy it was to be part of your first Missoula flood tour! It opened my eyes to a subject I knew little about but now am very interested in. I have no doubt that your business will florish quickly. You are easy to listen to, so knowledgeable, quick to answer questions, with a wry sense of humor to boot. I highly recommend this tour both to beginners in geology and to the more advanced. Terrific!"
"Interesting, informative, educational, explanatory, truly enjoyable personal guide."
"Tom is extremely knowledgeable and very easy to understand. Everyone in the group of 7 that went were very happy we did. Once you do this tour you look at your surroundings with a knowledge of how they were formed. What a great history lesson from so many years ago. I would definitely recommend taking this tour. You will enjoy meeting and getting to know Tom."
"A learning and interesting tour. Tom Stephan was patient with my repeated questions. A hands on field trip for sure. I highly recommend. Tom definitely knows his stuff."
Discover the dramatic story of Ancient Lake Missoula’s catastrophic floods on a guided auto tour through some of North Idaho’s most stunning landscapes. See massive ice-age boulders, giant current ripples, and the evidence of one of Earth’s most powerful geological events—all from the comfort of your vehicle.
Small Group Tours | Expert Guide | Perfect for All Ages
Massive ice-rafted boulders (called “erratics”), giant current ripples in Careywood, and enormous deposits of glacial sand at the Pack River Delta
From Lake Pend Oreille to the Cabinet Gorge Dam, witness the power of ancient ice and water that sculpted this landscape
Learn about the Purcell Lobe ice dam, the catastrophic floods, and the fascinating geology professor who proved it all happened
Our signature Ancient Lake Missoula Floods Tour takes you through the “Deluge Zone” where 3.2 trillion gallons of water per second once roared through this region. Starting at the scenic shores of Lake Pend Oreille in Bayview, you’ll journey through landscapes shaped by one of the most powerful natural events in Earth’s history.