Her family was trapped in the Land of the Lost through similar circumstances to the Porters .
Christa ( played by Shannon Day ) like the Porters , the beautiful cave - girl Christa is from San Francisco back on Earth but was born in Chicago .
Christa 's family was trapped in the Land of the Lost through similar circumstances to Porters Porters .
Christa ( played by Shannon Day ) like the Porters , the beautiful cave - girl Christa is from San Francisco back on Earth but was born in Chicago .