The escapees finally reach the beach after hiking through the jungle. Their clothing, although made to look torn, shows no signs of soil despite various fist fights, plunging into quick sand, falling in water, pulling themselves from the river, and making their way through dense undergrowth - such as threadbare or torn fabric in the area of the knee or staining along the bottom leg of the trouser.
At one point we see Verne (Clark Gable) escape by jumping out a window into the water. A short while later, on land, he pulls a bible out from inside his shirt to check a map printed inside. As he flips through the pages of the bible, there is no sign whatsoever that this book got wet. This bible - which he carried unprotected - should have shown obvious signs of water immersion (damp edges, soggy paper, etc.) but it appears to be perfectly dry.