| Name | Age | Sex | Injuries | Injured areas |
|---|---|---|---|---|
| Jensen, Pete | Not recorded | Male | Not recorded | Not recorded |
| Jensen, Jessee | Not recorded | Male | Not recorded | Not recorded |
| Jansen, Ted | Not recorded | Male | Not recorded | Not recorded |
Saturday, 15 August 1972 Pete Jensen, Jesse Jensen, and Ted Janssen entered Onyx Cave at 6 p.m. Although Pete had been to Onyx several times before, this was the first caving trip for the other two. They explored the cave for 4 hours and then realized they could not find their way out. After an estimated 12 hours of searching, they gave up and waited to be rescued. They had eaten their five candy bars on the first day. On Monday they overturned a trash can and found unopened cans of pears and string beans which they punctured with a broken stalactite. While prying the lid of one can, Pete Jensen gashed a finger. The three were rescued at 3 a.m. Tuesday, 57 hours after entering the cave, by Arizona cavers and the Southern Arizona Rescue Association. The three had camped for two days within 75 feet of the keyhole which led out.
Analysis: Inexperience. "In our time spent exploring we never once turned our heads to recall the pas- sage we had gone through, always looking ahead to the next formation, the next room beyond. When we did turn around to return. everything looked different. "In a way I'm glad all this happened to me, because it taught me to go prepared, and especially to know where I've been. It taught my brother and his friend not to go caving with me anymore." (Pete Jensen)