Sierra Nevada del Cocuy, Colombia, with high Andean Espeletia on the foreground. Glacial sequence and environmental history studied by González et al., 1965 and Van der Hammen et al., 1980. Picture © Suzette Flantua

Picture from the table top mountains, ‘Tepuy’, in southwest Venezuela. Several have been studied to determine their sensitivy to climate variablity (see papers by V. Rull at http://publicationslist.org/vrull). Picture © Suzette Flantua

Swamps at Patía Valley, Colombia, where two cores were raised and studied by Vélez et al., 2005. Picture © Henry Hooghiemstra

Drilling preparation at La Primavera Lake, Colombia. Picture taken from Melief, 1985, unpublished PhD thesis, University of Amsterdam.