Next Generation Data as Mars Base Tunnels
Adelaide and the Doctor flee from the water creature down the connecting tunnel.
Source: The Doctor Who Locations Guide
“The Waters of Mars” Filming Locations
Doctor Who special “The Waters of Mars” was filmed in Newport & Cardiff in the United Kingdom.
Taff's Well Quarry as Mars Surface
The Doctor arrives on Mars and it captured and brought into the Mars base.
Source: The Doctor Who Locations Guide
Victoria Place as Adelaide's Flat
The Doctor returns to Earth with the surviving Mars crew and is met by Ood Sigma.
Source: The Doctor Who Locations Guide
The National Botanical Gardens of Wales as Hydroponics Dome
The water creature starts its invasion of the Mars base by killing several people.
Source: The Doctor Who Locations Guide