Colombian Kids Who Survived Fatal Plane Crash Hid From Rescuers

The four children who survived a plane crash in Colombia last month and then fended for themselves in the treacherous Amazon jungle for 40 days, actually hid from their rescuers ... TMZ has learned.

The kids -- ages 13, 9, 4, and 11 months -- were onboard a Cessna that crashed in a Colombian jungle nose first, killing their mom, the pilot, and another man. Their survival story is incredible, and the subject of a TMZ documentary -- "TMZ Investigates: The Miracle Children of the Amazon" -- which airs tonight on FOX at 8 PM ET.

TMZ has had boots on the ground in Colombia since June 9, when the kids were rescued. As we report in the doc, military GPS shows rescuers were in earshot of the kids days before they were rescued, but the children hid from them. We're told they feared the rescuers were actually insurgent forces that would kill them.

There are two survival stories here -- surviving in the jungle amid wild animals, snakes, poisonous bugs, and deadly fruit, and surviving the plane crash itself. As for how they survived the crash, three of them were in the back of the plane, which remained relatively intact. As for the infant, she was cradled by her mother, who cushioned the child during impact.