A modern-day, real life adventure, this book will take readers along for a rollicking ride through South America on a race to the bottom of the Earth. When the author first met Polish explorer, Yurek Majcherczyk on a commercial feasibility expedition down Ecuador's Quijos River in 1989, he did not know it would lead to taking part in a Polish race, stumbling upon a mummy-filled cave and even getting wrapped up in a legend linking long-lost Incan riches to a riverfront castle in Poland. As the adventurers plunge deeper and deeper into unknown territory, they discover a rival Polish team trying to usurp their goal. The author seamlessly weaves these tales with his own exploits and adventures-climaxing with a tumultuous hike out of the canyon with both teams returning to complete their race the following year. Comrades on the Colca was a finalist for the 2017 Foreword Review INDIES Award.