So the science is maybe a little suspect but this late 1970s disaster movie at least has a good collection of stereotypes (former sports star with a secret, blonde TV woman, butch advertising executive, mum from Beverley Hills) who set off for a hike in the mountains with Steve (Christopher George).
Unfortunately the animals are waiting for their moment to attack and it finally comes after much staring by eagles and vultures. Mountain lions and bears menace the group. The party are struck by human conflict too as Leslie Neilsen decides Steve is a loser and takes a breakaway group in a different direction. Leslie also ends up affected by the radiation and commits murder, attempts rape and then decides to fight a bear in unarmed combat. That thankfully is the last we see of him.
The film is complete nonsense though does have some genuinely scary moments especially the rather unfortunate victim who is bitten by a rattlesnake and then savaged by a dog. A policeman is also attacked by flying rats which is more laughable than anything else. The budget was low but what they had they used well.
