The Fantastic Journey (1977)

The Fantastic Journey is an American science fiction television series about a family and their associates who charter a boat for a scientific expedition into the Caribbean. After an encounter in the area of the Bermuda Triangle with an unnatural green cloud, the group find themselves shipwrecked on a mysterious uncharted island from which they are unable to escape.They encounter Varian, initially disguised as an Arawak native, who is later revealed to be from the year 2230. A 23rd-century pacifist, musician and healer, Varian explains to the travelers that, like he and many before them, they have been caught in a space/time continuum where people from the past, present, future and from other worlds are trapped, co-existing on the island in a series of timezones. The only way home can be found in a place called "Evoland", which lies "far to the rising sun". The only way to travel between time zones is via invisible gateways that instantaneously transport individuals or groups from one zone to another.