WARSAW, POLAND—A 32-foot-long tunnel thought to be an escape route dug by prisoners at the Sobibor Nazi death camp has been discovered by Polish and Israeli archaeologists. It extends from the Sonderkommando barracks, under a barbwire fence, to the edge of the camp. “We found a snake-shaped tunnel in what was once the center of the shed, leading eastwards—out of the camp,” said Yoram Haimi, a leader of the excavation team. The researchers think that the tunnel was never used, but was discovered during an armed uprising at the camp in 1943 when many prisoners were killed. The tunnel was probably filled in at that time.