Bartola trail
A trail of about three kilometres in the forest starting at the meeting of the Bartola and San Juan rivers, where the park rangers have a post.
Río San Juan · Nicaragua
Indio Maíz Biological Reserve
A vast rainforest in south-eastern Nicaragua along the San Juan River, visited with local guides from El Castillo.
- More than 250,000 ha
- By boat on the San Juan River
- Local guide required
- One of the largest rainforests in Central America
About the park
Indio Maíz is a biological reserve that covers a large part of the south-east of Nicaragua, along the San Juan River on the border with Costa Rica. It is one of the largest and best-preserved areas of rainforest in Central America, with a rich wildlife that includes jaguars, tapirs, monkeys and many birds.
Only a small part of the reserve can be visited. The usual visit starts in the village of El Castillo, with a boat trip on the San Juan River to the ranger station, and a guided walk on the Bartola trail or on the more demanding Aguas Frescas trail. Trails can be muddy and in poor condition, so the visit is for travellers who like simple, wild places.
- One of the largest rainforests in Central America
- A boat trip on the San Juan River
- Guided forest walks
- El Castillo and its old Spanish fortress
Wildlife
Jaguar and tapir, rarely seenHowler and spider monkeysMacaws and toucansPoison-dart frogsCaimans
What to do
Aguas Frescas
A longer and more demanding trail, reached by boat from El Castillo.
El Castillo
A village on the river with an old Spanish fortress, the usual base for the visit.
Plan your visit
- Guide
- A local guide is required to enter, and most visitors come on packages that include the boat and the guide from El Castillo.
- Entrance
- The reserve charges entrance fees at the ranger post. We could not confirm the current price from an official source.
- Best time
- The dry season from January to April; the trails are muddy at all times.
- What to bring
- Long light clothes, waterproof boots, insect repellent, a rain jacket and water.
How the entrance is paid
We did not find a national online ticket system for Nicaraguan parks. The entrance is paid at the ranger post, and the boat and guide are arranged in El Castillo.
Ask us for the current conditions and for a guided visit with everything arranged.
Information is approximate and based on public guides, not on an official fee table; hours, fees and access change. We confirm the current conditions before you go.
Getting there
By river
El Castillo is reached by boat on the San Juan River from San Carlos, or by road to the village from the Managua–Granada side with a connection by boat.
From the capital
The journey from Managua takes most of a day. Ask us for the route.
Frequently asked questions
Can I visit on my own?
A local guide is required, so it is simplest to go with a package from El Castillo.
Is the reserve easy to visit?
No. It is wild, humid and remote; the trails can be muddy.
Do you offer this as a tour?
We arrange it on request. Tell us your dates.