Rionegro was the only site we flew where a "normal" conventional landing approach was possible: down-wind, cross-wind, final.
The Jose Maria Córdoba International Airport —JMC is located in the valley below the slope in Rionegro. A Boeing 747 cargo plane landed there while we were flying, and recently, JMC was one of two airports chosen to test high-altitude operations of the Airbus A-380.
Access to the slope is restricted, but we were invited to fly there. Situated at about 8000 feet elevation, lift was mostly thermals passing through while we were there, but one could maintain during the sink cycles by flying out beyond the first tree line.