A River Below

Truth and ethics become a tangled mess in this gripping expose of eco-activism in the age of alternative facts

A River Below Deep in the Amazon, the near-mythical pink river dolphin is being hunted to extinction. Two activists, a marine biologist and a TV star, are working tirelessly to protect the species. Yet as their efforts to raise public awareness become increasingly complex, a scandal erupts and serious ethical questions are raised. This surprising roller-coaster of a doc digs into the complexities of the modern media and the moral dangers of using the ends to justify the means.


Reviewed in Variety
Reviewed in The New York Times
Reviewed in The LA Times
Reviewed in The Hollywood Reporter

The Producers


Mark Grieco - Director

Mark is an independent filmmaker and photographer. He has spent the last 12 years traveling Latin America looking for stories and mining for gold. His film, MARMATO, premiered at the 2014 Sundance Film Festival and went on to win 15 international awards. He is the winner of grants from the Sundance Institute, Ford Foundation, and The MacArthur Foundation. He studied film production at the Tisch School of the Arts at New York University.


Torus Tammer - Producer

Torus is the founder of Sandarba, the production company based in Bogota, Colombia. Sandarba was formed with partner Mike Erwin with a mission to discover and nurture Colombian talent and stories to bring to worldwide audiences. Sandarba has completed its first documentary feature film, the multi-award winning A RIVER BELOW. Next up on the slate is SOMBRA, a feature film written and directed by and starring Manolo Cruz (his last film BETWEEN LAND AND SEA won a special jury prize at the 2016 Sundance Film Festival).

The film is scheduled for production in Colombia in 2018. Torus has worked extensively in the film industry, both in Los Angeles and Australia. He is a partner in The Allegiance Theater’s Australian division, which is developing a full list of projects, including the bestselling Australian true-crime series, UNDERCOVER.


Mike Erwin - Executive Producer

After producing several national television commercials, Mike began his career in television production as a stage manager for famed production company Smith-Hemion Productions. While there, he participated in over ten Emmy Award-winning productions. Mike has produced fifteen feature films to date and has produced and/or co-financed six films in international co-productions. He has enjoyed development and production associations with Warner Brothers, New Line Cinema, Miramax Films, HBO and numerous others.

Erwin is the recipient of a DGA Award and two RIAA awards for Gold and Platinum sales, among others. Mike is the founding partner of the production company Sandarba, based in Bogota Colombia. Sandarba has completed its first documentary feature film, the multi-award winning A RIVER BELOW. Next up on the slate is SOMBRA, a feature film by 2016 Sundance award winning director, Manolo Cruz.

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