La Brea (hollow world scifi TV series: first season trailer).
SF series La Brea takes us back to the roots of science fiction, with some hollow world scifi action – aka, a massive sink hole opens in the USA, and those that survive the plunge find themselves in Pellucidar-lite. Looks a cross between Lost and At the Earth’s Core in its execution.
This one is streaming on NBC from September 28th, 2021.
