[This message has been edited by cancunhound]
I noticed the Eco-Aventura group has a 3 night excursion to the island on July 25th. Everything included for only 360.000 pesos(a little more if you throw in scuba), that's a great price for a guided trip to one of Colombia's unique national parks. Info can be found here:
http://www.geocities.com/ecoaventuraturismoecologico/Salidas.htmland here,
http://www.terra.com.co/proyectos/maravillasdecolombia/parquegorgona.htmlWould make an interesting side trip should you have an adventurous calena.