A timely documentary that raises urgent questions about how we travel and the unintended cultural and environmental consequences of tourism around the globe. Gringo Trails follows well-worn travelers' routes through Bolivia, Thailand, Mali, and Bhutan and reveals the complex relationships between colliding cultures, such as the host countries' need for financial security and the tourists who provide it in their quest for authentic experiences. Through the stories of both travelers and locals, the film explores the dramatic impact of travel and tourism around the world over the past 30 years, highlighting the cases of the Amazon Tuichi River and Uyuni (Bolivia), Ko Phangan (Thailand), Timbuktu (Mali) and Bhutan.