Day two of the Abyss of Cenote cave expedition - Now that all the top-end Leica Geosystems equipment has been prepared and calibrated for surveying the cave, Tommaso Santagata of the La Venta Exploration team prepares himself outside of the comfort of his tent for entering the cave. Eager not to get his feet wet on the snow before entering the sub-zero temperatures of the cave, he stands on some plastic packaging to get changed into his caving clothing. Tommaso is wearing typical clothing for caving in Europe - his attire consists of a fleece onesie (also called a "furry” or “undersuit') for protection against the cold, plus a cordura oversuit for protection against the abrasiveness of the cave.