The result is an absorbing quest for the Holy Grail with plenty of comic notes while preserving the thrills and occasional moments of horror. Plotwise, there's a lot of similarities with Raiders, but the Father-Son dynamic keeps it fresh.
Also of note is an extended opening sequence which looks inspired by early silent comedies. It's a wonderful piece of slapstick starring the late Phoenix and features a horse and train chase that explains various bits of the future archaeologist's attire, his hatred of snakes and his chin scar.
Verdict: Breathless action fun.