Meet the Owners

With 50+ years collective experience in backcountry adventures and almost as much in the outdoor industry, Steve "Doom" Fassbinder and Lizzy Scully know what it takes to live and play in the world’s wildest areas. Out of a desire to share their passion with others, they created Four Corners Guides.

Steve "Doom" Fassbinder and Lizzy Scully, founders and owners of Four Corners Guide at Scullbinder Ranch.

Our Story

Doom and Lizzy met through outdoor industry connections. They climbed "The Cruise" in the Black Canyon on their first date, the "Naked Edge" in Eldorado Canyon shortly thereafter, and after soloing to the summit of the First Flatiron on election day 2016 decided they were a match made on granite. The summer after Lizzy moved to Mancos, the duo bought an idyllic, remote cabin and 35 acres at the tip of Weber Mountain. Obsessed with adventuring, it only made sense for them to pursue a dream they both shared of running a base camp, now called Scullbinder Ranch, and adventure guide service together. The couple thrives on sharing the wild, remote places they know and love and the challenging experiences they regularly have with friends, family, and now, with you, Four Corners Guides' guests. Join us for an extraordinary adventure.

Meet the Guides

Lizzy Scully

Founder & CEO

A dedicated and passionate adventurer, Lizzy spent more than two decades climbing big walls around the world. She’s best known for her for her first free ascent with Heidi Wirtz of “Bad Hair Day” (5.12-) on the South Howser Minaret, Bugaboos, Canada and her third ascent of “Inshallah,” a route up the 4400-foot Shipton Spire (19,700’) in the Karakoram Range of Pakistan. She focuses now on cycling andpackrafting.

Steve Fassbinder

Founder, Head Guide

Steve Fassbinder, known as “Doom” among his friends and within the tight-knit mountain bike industry, started adventuring at age 14. He raced single-speed mountain bikes until his 30s, but eventually started focusing on exploring huge backcountry landscapes. Passionate about creative, human powered, low impact travel, he’s probably explored more of the Southwest United States by bike and packraft than any other person.

Thad Ferrell


Thad spent his childhood traveling out West to fish with his parents. They planted a seed, and whether the branches led to climbing, biking, hiking, fly fishing, or floating the rivers of the West, he knew this was where he wanted to put down roots. Always thinking about fly fishing, and after a very narrow brush with death in 2017, Thad decided to move forward with his dream of starting a guide service. Check out King Fisher Fly Guides.

Sarah Tescher


Bio coming soon!

Jonathan Yazzi


Jon Yazzie is a full-blooded Navajo and aspiring adventure cyclist, mountain bike racer, and lover of the outdoors. He currently runs tours via his bikepacking company, Dzil Ta’ah Adventures, based out of Kayenta, Ariz. He has done many rides on and off Navajo land that have been written up in adventure mags & blogs. He has also helped develop bikepacking routes passing through Navajo lands and has several hidden gems of his own. Jon will be co-leading all trips done on Navajo lands, providing both bikepacking expertise and a more in-depth cultural experience for our guests.

Ashley Carruth


Bio coming soon!

Next Steps...

Want to learn how to bikepack, packraft, or bikeraft? Interested in women's-only adventures? Or, do you want to take your skills to the next level and embark on an advanced DOOM Tour? We've got featured scheduled tours, or you can design your own. What's your tour?