Laguna Congo (Bosque Alegre crater lakes)
Nature spot · San José & Central Valley · hidden gem
The quiet sister of Laguna Hule: a big, deep-green crater lake ringed by forest inside the Bosque Alegre wildlife refuge, reached only on foot. The rocky, often muddy track starts at the Bosque Alegre lookout, runs past Laguna Hule, crosses a river and then branches right for about 3 km through the woods. Howler monkeys and birds are common along the way, and there's rarely anyone at the water.
- Cost
- Free
- Time there
- 4 h
- Best time
- dry mornings, January to April
- Kids
- 3 / 10
- View
- 7 / 10
- Crowds
- 1 / 10
- Swimming
- 6 / 10
- Effort
- 6 / 10
- Location
- 10.30542, -84.21673 — Google Maps
Before you go
- Entry
- Free
- Tickets
- Free entry, no ticket
- Road
- Gravel — a regular car is fine
- Walk
- 8,000 m
- Swimming
- Yes
- Facilities
- restrooms, food
- Dogs
- Allowed
- Bring
- trail shoes, rain jacket, swimsuit and towel, picnic, insect repellent
- Fewer people
- Usually empty: hikers often have the lagoon to themselves
- Season
- the gravel road needs no 4x4 when dry; the trail is much muddier in the rainy season (May to November)
- Checked
- 2026-10
Tip
Pack a real picnic and a swimsuit: there are no services at the lagoon, and the water is cool but pleasant. Leave early, since afternoon rain turns the trail into a mud bath.
Be careful
Don't cross the river if it's running high after rain, and go with company: there's no cell coverage guarantee and no one around to help. Wear shoes with grip for the loose stones and mud.
Getting there
Drive via Vara Blanca, Cinchona and Cariblanco toward Los Ángeles, then about 6.5 km of gravel to the Alojamiento y Mirador Bosque Alegre (above Laguna Hule), where you can park and use the restrooms. From there it's roughly 4 km each way; about 8 km round trip.
Places nearby
- Alojamiento y Mirador Bosque Alegre (restaurant above Laguna Hule)Food & CoffeeA simple country restaurant and lodge on the rim above Laguna Hule, the deepest natural lake in Costa Rica.
- Recreo Verde Hot Springs & SpaDay Passes & Hot SpringsHot-springs complex beside the Río Toro in the hills above Venecia, about 1 h 40 min from the airport: thermal pools, a spa, zipline and canyoning, trails to a small cave, a restaurant, cabins and a campground.
- Cascadas Pozo Azul (Caída Nieve y Paz)Parks & WildlifeFarm trail that drops past blue swimming holes and a natural slide to Caída Nieve y Paz, the tallest waterfall around Bajos del Toro at about 155 m.
- Blue Falls of Costa Rica (Cataratas Las Gemelas)Parks & Wildlife · from $20Private forest reserve next to Catarata del Toro with a chain of milky-blue waterfalls and pools colored by volcanic minerals; you can swim at any of them.
- Catarata Río Agrio, Pozas Celestes & Dino LandParks & WildlifeFamily-run property where the acidic Río Agrio drops about 50 m into a steep canyon; the ticket also covers a lookout and the Pozas Celestes, cold baby-blue river pools down the road.
- Catarata Tesoro EscondidoParks & WildlifePrivately run waterfall on the edge of Bajos del Toro with its own lookout; large signs on Route 708 point the way.
Sources: OpenStreetMap way/482565507 · Wikidata Q23743467 · https://quebuenlugar.com/es/lugares/laguna-congo-alajuela/ · https://ticotimes.net/2021/05/21/costa-ricas-newest-canton-launches-tourism-strategy · https://www.openstreetmap.org/way/482565507 · https://www.wikidata.org/wiki/Q23743467