Near the mouth of the river, the waters of the Rio Hediondo backed up into the surrounding jungle. There was a big pool of swamp-looking water off to our left. In the middle of it was a fallen tree with branches stretched heavenward as if beseeching a greater power to pull it from its watery grave. Spread across the naked limbs were loops of what looked to me like innertubes. Alan said it was probably an anaconda. Again, I wished I had my camera. Then again, I was content to stay in the main channel of the river and put distance between us and the biggest snake I had ever seen!