We continued to climb from this pine to the crater of the volcano without crossing one valley, for the ravines do not merit this name. To the eyes of a geologist the whole of the island is one mountain whose oval base is prolonged to the north-east and in which several systems of volcanic rock, formed in different periods, may be distinguished.

April 15th. At dawn we passed the Anaveni river, a tributary river that comes down from mountains in the east. The heat was so excessive that we stayed for a long time in a shaded place, fishing, but we could not carry off all the fish we hooked. Much later we reached the foot of the Great Cataract in a bay, and took the difficult path - it was night by then - to the Atures mission, a league away. We found this mission in a deplorable state. At the time of Solano's boundary expedition (101) it contained 320 Indians. Today it has only forty-seven. When it was founded Atures, Maypures, Meyepures, Abanis and Uirupas tribes lived there, but now there were only Guahibos and a few families from the Macos left. The Atures have completely disappeared; the little known about them comes from burial caves in Ataruipe.