American movie was likely from the 60s. Man in encased in a block of ice and floating in the ocean with another man sitting on top of him. The man on top is angry and begins chipping away at the ice but stops realizing that the ice is preventing him from drowning. Later the sun melts the ice and breaks apart. Both men are floating in the water and the freed man thanks the other one not knowing he is an antagonist.
The Perils of Pauline (1967) – http://www.imdb.com/title/tt0062117/
Again, thanks. That’s it. Been racking my brain for years trying to find it. Only had a vague recollection of the movie that I put in the description.
Thanks Cotopaxi! You’re very lucky to get both your movies found so quickly, Montresor.
You are very welcome, Montresor!