Has anyone been to/explored this part of Colombia?

This region of Colombia - specifically on the western edge of the mountain range at Farallones de Cali, is possibly one of the most unexplored and harshest environments on the planet, with even more intense rainfall and weather than other parts of the Pacific region. According to the Chelsa climate model, certain parts of the area circled in red possibly receive 20,000mm rainfall annually - although there are no weather stations to confirm this.