A short boat ride from Cochas brings you to the island of La Corota. Where you first dissembark is by a small chapel where many people flock to on sundays to burn candles and say prayers. Just behind the church is the entrance to a path that crosses the island. You must pay 1000 pesos admition fee. The pathway goes through the evergreen cloud forest that covers the island and brings you to a lookout point on the other side.
When leaving the island, the boat does a loop around the far side of the island, giving you a view from all sides, before returning to the town.
The town (the part along the water) is quite nice, there is a canal running up the middle of it, on either side a dirt road, and on either side of those, some wooden buildings. The buildings include several restaurants and shops. On the canal are boats loading passengers to go to the island, La Corota.
On sundays the town comes alive, when many people come visit the chapel on the island. In the town there springs up many stands on the roadside selling everything from souvenirs to clothes to lunch. All in all , it's a fun time to visit.
In Cochas there is a canal running alongside the road. Boats for the island will depart from here, just see who is looking for passengers and hop on. It was a flat fair of about 2000pesos for the 10-15 minute crossing. You get dropped off at wooden docks on the island.
The boats are fairly small, have no lifejackets on board and carry about 10-14 people.
Getting here from Pasto is easy, but you have to know where to catch the bus.
From Pasto buses leave from the corner of calle 22 & carrera 7. They leave frequently throughout the day, so no need for much waiting. In Cochas the bus will leave you a short walk from the lake in the modern 'concrete & pavement' part of town. From here it's a 15 minute walk down a gravel road to the 'dirt & wood' part of town, along the shore from where the boats to the island depart.