In those wild and carefree days of the late 1950s, long before America had put a man on the Moon, a scientific project is examining the effects of cosmic radiation on living beings... by sending up rockets loaded with test animals!
Unfortunately, one vessel goes off course, exposing its subjects to an extended dose of radiation, and causing the rocket to crash somewhere in Africa.
Six months later, square-jawed scientist Dr Quent Brady (Jim Davis, who would go on to star in Dallas) and his associate Dan Morgan (Robert Griffin) read newspaper reports of supposed monsters wreaking havoc near where they believe their lost rocket might have ended up.
Naturally, they head off to investigate, speculating that there might be some connection with the consignment of wasps sent into space on the doomed ship.
Their journey from the coast to Central Africa is long and arduous, and they find themselves and their bearers plagued by hostile natives, insufferable heat, dehydration, contaminated water, et al before they even get to the missionary station on the edge of the region known as Green Hell, where these "monsters" are said to be.
Unfortunately, their arrival at the missionary station coincides with the death of the 'saintly' Dr Lorentz (Vladimir Sokoloff), who had been investigating the monsters himself.
Our heroes' bearers have had enough and scarper, but Dr Lorentz's daughter, Lorna (Barbara Turner), persuades local villagers to take their place - on the condition that she can accompany Dr Brady's expedition into the Green Hell.
Turner seems a bit lost here but she would later write the screenplay for the killer-dog movie Cujo, so I can forgive her anything.
Monster From Green Hell is a must-watch for aficionados of kitsch, 1950's B-movies that are so awful they're hilarious.
Spliced together with stock wild animal footage and scenes from 1939's Stanley and Livingstone, California stands in for Central Africa... and it's quite obvious.
The narrative structure of Monster From Green Hell is an object lesson in bad storytelling, from giving away the appearance of the kaiju-sized killer wasps within the first 10 minutes (thus destroying any sense of mystery as to what our heroes are tracking) to committing the cardinal sin of cinema: a deus ex machina resolution that the protagonists had absolutely no hand in.
Spoilers for a six decade old movie, but the wasp queen and her drones are all wiped by a volcanic eruption (which, of course, our heroes had nothing to do with) before they can multiple and take over the world.
The way the story unfolds the destruction of the giant wasps would have occurred whether or not Dr Brady had been hunting them.
Even though Monster From Green Hell only runs for 71 minutes, and starts off very breezily, director Kenneth G Crane's pacing is all over the place, with the extended journey through Africa taking up an inordinate amount of time, for instance. Then, with only 10 minutes or so to go at the climax of the piece, the movie suddenly switches to an almost pointless "explorers lost in maze of underground tunnels" story.
You don't come to a B-movie expecting character development and there's certainly none on display here, with pretty much everyone simply being walking mouthpieces for the lines of Louis Vittes and Endre Bohem's screenplay.
The giant wasp model, though, is a classic of the era, which is probably why Crane decided the audience should get to meet it long before the main characters do.
However, I'm not sure that wasps have pincers, but I guess that's part of the mutation that caused them to balloon up to Godzilla size.
The size of the giant wasps seems quite flexible, and we rarely see more than one at a time, leading me to think - right up until the final act - that there might only be one giant wasp, despite Dr Brady's insistence that there was a swarm of them.
It also feels rather odd that Brady and his team are able to track the wasps by giant footprints they leave in the dirt. It's never stated outright, but I decided in my headcanon that due to the creatures' enormous size their fragile wings aren't powerful enough now to lift them off the ground.
The restored print of 1957's Monster From Green Hell, for the most part, is striking in its crisp black-and-white, although there are still scenes with the odd scratch down the centre, but then the film is 65 years old and I doubt it's been treated with any particular reverence until it was cleaned up for its physical media release a few years ago.
It has now been officially released online (see above) by Film Masters.
This version of the movie also comes with a slightly random, but nevertheless oddly delightful, colourised final sequence... when the heroes watch as nature does what they couldn't.

