This one didn’t get the bugs worked out before release. It’s another in the Hollywood cycle of films based on every kind of creature enlarged by radiation. Today, the hot topic is ecology and the beasties have returned to normal size, but still bent on getting back at mankind.
In phase IV, the ants are it. A couple of scientists (Nigel Davenport and Michael Murphy) set up an elaborate outpost in the desert to find out what the ants are up to and why.
Despite endless conversation and dial twirling, Davenport and Murphy never focus the story in any dramatic direction. Joining them as an ant attack refugee, Lynne Frederick only adds to the confusion.
Cinematically, the ants are never very menacing. Pic opens with an interminable segment inside an anthill. But photography is poor quality, looking like outtakes rejected by National Geographic.