"Lost Planet of the Gods" is the second episode of the 1978 series Battlestar Galactica. The first episode, "Saga of a Star World", was a three-hour episode which aired on September 17, 1978. The second episode was a two-parter, and aired September 24 and October 1.
The Galactica encounters an energy-sucking void of blackness, and Adama realizes this is the void the Lords of Kobol crossed while leaving their home world of Kobol to found the Twelve Colonies. All the Viper pilots get sick, so women (misogyny is alive and well in the Colonies) are trained to be pilots.
The Galactica finds Kobol all right (pretty easily, if you ask me), and it looks suspiciously like the pyramids of Giza and the Temple of Karnak.
Which is correct, since that is where the scenes were filmed.
Here's one shot, showing Adama, Athena, and Apollo walking across the sand toward the pyramids.
Here's another shot of them among some tumbled stones at the site.