PALO SECO

location N 121,000 , E 284,000 (Cassini links), Area - 0.5 hectacres, 75 m in diameter. There is negligible tassik in this area and the cones are found in thick bush, surveys show that the mudflows cover 24 hectacres. No pebbles or boulders are seen around the eruptive centres.

This is the principal vent, it has been classed as a caldera type by Barr and Saunders (1974) There is a visible oil ring in the mud and a sheen on the surrounding mud. A gas bubble is seen approximately every 10 seconds.