Watch The Treasure of the Sierra Madre (1948) (1947) HD Full Movie Free on SolarMovie. Watch The Treasure of the Sierra Madre (1948) (1947) online free. Two down-on-their-luck Americans searching for work in 1920s Mexico convince an old prospector to he...Two down-on-their-luck Americans searching for work in 1920s Mexico convince an old prospector to help them mine for gold in the Sierra Madre Mountains.