Final part of the wildlife presenter's epic adventure. On Colombia's Pacific coast, Nigel finds giant geckos, glowing beetles, and some amazingly colourful frogs.

Nigel Marven explores the wild sides of Colombia. Santa Marta is the world's tallest coastal mountain, home to many species found nowhere else on Earth.

Anacondas are the biggest snakes in Colombia. Nigel searches for these awe-inspiring serpents in the flooded forests of the mighty Amazon.

Nigel Marven explores the wild sides of Colombia. He begins his journey in the capital, Bogota, and visits a garden with a blizzard of hummingbirds.