There was a Belgian helicopter pilot in the Congo during the 1950s who took an aerial picture of a snake (supposedly) that may have been twice that size. It’s a “famous” cryptid picture.
We had a job out between Maturin, Venezuela and the coast to the east. The chopper flight offered good opportunity to observe the swamp and jungle. I’d sit in the door and look, saw what looked like snakes but never could be sure. Should have been plenty to eat since I saw lots of Capybara.