After going through a great channel, we went along a large fissure from south-east to north-west, still in the Mangabel rapid. The rock of that region was highly ferruginous. That fissure was of great depth, and absolutely free from rocks in the channel itself.
When we emerged from the fissure we were confronted to the east on the right bank by two enormous hemispherical domes 100 ft. high, grassy but absolutely without a tree.
The rocky formation of the hills was apparent a little farther down stream, when going along the great eastern channel of the river. On the left bank we had hills with campos on their summit. All the hills I noticed in that region had rounded backs.
I greatly admired the bearing of Col. Brazil as we dashed down at a terrific speed through the most intricate channel in the rapid, strewn with sharp rocks. Had we touched one of those rocks it would have meant the destruction of the boat, the loss of all the valuable cargo and most of the crew, as the majority of them could not swim.
There were three passages there, called respectively the Casson, near the left bank; the Dos Ananas, in the centre; and the channel da Terra Preta, which we followed, on the right. At Lua Nova, the end of the Mangabel rapid, the river turned in a sweeping curve to the north, the rocks getting fewer and fewer until eventually the river became quite clear of them, with only high hills along both banks. Lua Nova was a little settlement of five houses and a shed, some of them whitewashed, with doors and windows painted green. A small plantation of Indian corn, sugar-cane, and mandioca had been made, the soil being extremely fertile at that spot. We enjoyed a magnificent view to the west and north-north-west, the river there forming an elbow.
Wreck of the "Mamoria" in the Calderão of the Solimões River.
Indians of the Putumayo District.