With warm feelings I think of the beautiful people I met here, during the many hikes, at FLORA, Tropenbos International and even in the swimming pool. My researched enriched and deepened thanks to the knowledge they shared with me. One woman in particular I want to name and thank, architect and consultant in cultural heritage: Olga Pizano. Since the beginning of the work period she has been a wonderful discussion partner. It was Olga who convinced me to go to Tierrandentro in the department Cauca, to see the monumental Prehispanic tombs with murals: hypogea.