The easiest way to get to the Corcora valley is to first travel to the town of Salento then take a jeep the rest of the way: there are several departures from the town each day.
In my opinion, the national park in which the valley is located is one of the most impressive to be found in Colombia's coffee-growing region. It's a striking place when you first see it: the jeep drops you off at the edge of an area of mountains and seemingly endless valleys, and within them are hundreds of colossal palm trees, some of which reach as much as 70 metres in height! The Corcora valley's palm trees have long been used as the emblem for the region, and actually seeing them up close is a thrilling experience.
The walk itself can be done without a guide and takes around five hours. Along it you'll traverse valleys and mountains, pass through areas of dense forests and cross some precariously shaky bridges. When exploring the Corora valley, it's really worth taking the time to do it properly, fully immersing yourself in the atmosphere and grandeur of the place; stop and sit down at times and carefully watch to see what emerges from these mystical trees. I also recommend stopping at the halfway point to get something to drink at the humming bird reserve, where you can observe these amazing birds at close hand.