Build a movie plot around this: What do the astronauts do at the oasis? Swimming
Astronauts Taylor (Charlton Heston), Landon (Robert Gunner), Dodge (Jeff Burton) and Stewart are in deep hibernation when their spaceship crashes in a lake on an unknown planet after a long near-light speed voyage, during which, due to time dilation, the crew ages only 18 months. As the ship sinks, Taylor finds Stewart dead and her body desiccated. They throw an inflatable raft from the ship and climb down into it; before departing the ship, Taylor notes that the date is November 25, 3978, approximately two millennia after their departure in 1972. Once ashore, Dodge performs a soil test and pronounces the soil incapable of sustaining life.After abandoning their raft, the astronauts set off through a desolate wasteland in hopes of finding food and water before their provisions run out. Eventually, they encounter plant life. They find an oasis at the edge of the desert and go swimming, ignoring eerie scarecrow-like figures around the edge of the water. While they are swimming, their clothes are stolen. Pursuing the thieves, the astronauts find their clothes torn to shreds, their supplies pillaged and the perpetrators a group of humans that are apparently so primitive that they cannot even talk and dressed in torn clothes raiding a cornfield. Taylor is attracted to one of the humans, whom he later names Nova (Linda Harrison).Suddenly, armed and uniformed gorillas on horseback charge through the cornfield, brandishing firearms, snares, and nets. They capture some humans and kill the rest. In the chaos, Dodge is shot in the back and killed, Landon is wounded and rendered unconscious, and Taylor is shot in the throat and taken prisoner. The gorillas take Taylor to Ape City, where his life is saved after a blood transfusion administered by two chimpanzees, an animal psychologist Zira (Kim Hunter) and surgeon Galen (Wright King). While his throat wound is healing, he is unable to speak. Taylor discovers that the various apes, who can talk and are in control, are in a strict caste system: gorillas are police...