The Sima de las Cotorras is a huge sinkhole in the forest west of Tuxtla Gutiérrez, around a hundred and forty metres deep, with sheer walls and a floor of dense trees. Its name means the Parakeet Sinkhole, and for good reason: thousands of green parakeets nest in the cliffs and leave the hole in swirling flocks at dawn, then return at dusk. The sight and sound of the birds against the rock is one of the great wildlife spectacles of the state. Tours that include the sinkhole often add the El Aguacero waterfall, in the canyon of the La Venta River. A stairway descends through forest to a pool beneath the falls, and the climb back up is demanding. Together, the two sights give a day of nature, with a cool plunge in the middle.
At the sinkhole
A trail leads to the edge, where viewing platforms and railings allow safe viewing. The birds are most active at dawn, when they rise in large flocks, and again around sunset, when they return to roost. Binoculars are helpful, and a quiet approach improves the experience. Some operators offer rappelling into the sinkhole for experienced participants, which should only be done with a licensed company and proper equipment.
El Aguacero
The canyon is spectacular, with cliffs and forest on both sides. A long stairway with hundreds of steps leads down to the river and the waterfall, so you will need fitness and patience, particularly on the climb back up. Take breaks and carry water. In the rainy season, the flow is high and the pool may be off limits, so follow the guide's instructions. The cascade is wide and impressive, and the cool mist is welcome after the descent.
Practical details
The trip involves early starts or late finishes, depending on whether you target dawn or dusk. Distances are long from San Cristóbal, so some travellers choose an overnight in Tuxtla or near the site. Wear sturdy shoes and quick-drying clothes, and bring repellent, sunscreen and a hat. Entrance fees are collected on site, so carry pesos. Check what is included in the tour, and ask about the best time to see the birds.
Why go
The trip suits birders, photographers and travellers who want to see a different, wilder Chiapas. Bird lovers can also look for toucans, hawks and other species in the forest. Those with limited mobility might prefer to skip the stairs at El Aguacero and focus on the sinkhole. The tour can be combined with the Sumidero Canyon for a themed nature trip, and it pairs well with a night in Tuxtla or the Chiapa de Corzo area. Respect the nesting birds by keeping noise low and not throwing anything into the hole.
Planning around the birds
The flights are most dramatic when the weather is clear, so check the forecast and be flexible. Arrive early enough to find a good spot on the platform and keep quiet while the birds are leaving or returning. A pair of binoculars and a long lens make a big difference. Combine the visit with a night in the area if you want to see both dawn and dusk, and carry a headlamp for the walk in low light.
What to expect
The experience
A guided nature day to a vast sinkhole filled with parakeets and a waterfall at the bottom of a canyon.
Best time
Dawn or dusk for the bird flights.
How long
About ten to twelve hours.
Tips
Bring binoculars, wear sturdy shoes and be ready for a long stairway.
Quick picks
- Best for
- Birders and photographers who love dramatic natural spectacles.
- Families
- Strong teens and adults only because of the stairs.
- Couples
- A rewarding outing for active couples.
- Pair with
- The Sumidero Canyon and Chiapa de Corzo.
- Time needed
- A long day.
Good questions
When are the parakeets most active?+
At dawn when they leave the sinkhole and at dusk when they return.
How deep is the sinkhole?+
Around a hundred and forty metres.
Is El Aguacero hard to reach?+
Yes, it involves a long stairway of hundreds of steps each way.
Can I rappel into the sinkhole?+
Some operators offer it. Only use licensed companies with proper equipment.
Do I need binoculars?+
They are helpful for watching the birds, but not required.