En el corazón de la tierra was released in the year 1976。En el corazón de la tierra is also called as At the Earth's Core, No Coraç&#, I jordens indre, Epidromi sta egata tis gis, Edgar Rice Burroughs' At the Earth's Core, Centro della terra: continente sconosciuto, septième continent, Centre terre, Angriff der Dinosaurier。

A Victorian scientist and his young American backer set off in their new earth-boring machine with a short test on a Welsh mountain. Unfortunately the thing is rather more powerful than expected and they end up in an enormous cavern at the centre of the earth. Here they find a race of humans enslaved to evil oversized prehistoric birds with extra-sensory abilities. The travelers decide they can be some help, the more so as at least one of the slaves is very eye-catching.

En el corazón de la tierra actors and actresses include Peter Cushing。