Congo (1995)

A team of scientists goes to—well, I'm just going to go out on a limb and say the Congo—and might be attacked by hippos but definitely are attacked by gorillas who smash people's heads, possibly trained by ancient Mayans. Oh, and the scientists have their own gorilla. Are they looking for treasure or something? The friendly gorilla probably saves the day by talking to the violent gorillas, and/or gets its own head smashed. In conclusion, it probably wasn't Mayans if this is in the Congo. (But you never know! Sci-fi!)

Wait, what? There are lasers in this movie?