Fodor's Expert Review Mamore River

Fremen Tours' four-day riverboat expedition from Trinidad offers you the opportunity to take a shortcut into the heart of the Amazon basin ($540 per person). Fly from La Paz to Trinidad in the Beni region, then it's a short drive (if it's the dry season) to the river. The program includes opportunities for day and nighttime animal-spotting, and treks into the jungle itself. The boat is the famous 'flotel' Reina de Enín, it is small but has a good kitchen, and the service is excellent. If you risk it in the rainy season, you'll find a smaller group of travelers accompanying you, which is better—it can get claustrophobic and noisy on board. For information, contact Fremen in La Paz.(www.andes-amazonia.com).