Build a movie plot around this: What causes the creatures to try to reach the earth's surface ? Tidal surge
While going through some routine practice training inScotlandfor mine detection a group of soldiers detects a large radioactive signal just before the ground opens up in an explosive eruption. They summon plutonium scientist Dr. Adam Royston (Dean Jagger) for advice as to what to do. When Royston has his own lab destroyed he surmises that the culprit was un-human, and when two soldiers guarding the large crevasse where the ground erupted disappear he understands that there is some chemical force at work. The Army decides to block up the ground with concrete but Royston knows that the force will come out for more radioactive material and prepares for it. When it is revealed by Dr. Royston that the monster is actually a mass of energy he gets ample resistance form the voice of reason, the Army generals at hand who decide to bomb the thing back to the center of the earth where it came from. In a final showdown with the force taking a horrible new form Royston and the Army fight for their lives.=============================================================================This is a more detailed synopsis.The movie opens with the credits and title over an open muddy field in Scotland. A soldier, in a radiation suit, holds a Geiger counter and walks searching for a buried sample. This is a military training exercise. The soldier, "Spider" Webb (Anthony Newley) finds the cylinder in a bit over a minute. As the soldiers are about to pack things in for the day, Lancing (Kenneth Cope) asks for a turn. Sgt. Grimsdyke (Michael Ripper) buries the sample. Haggis (Ian MacNaughton) and Webb gripe about the cold, the food and the delay. Lancing begins his search. Webb tries to help, but Landing has picked up a stronger radioactive source. Lt. Bannerman (Peter Hammond) takes the counter and tells Sgt. Grimsdyke to fetch Major Cartright. Major Cartright (John Harvey) pulls up in his Jeep and is escorted to the site of the strong radioactive reading. Lancing marks the location with a stick. Grimsdyke, Bannerman, and Cartright walk...