Emilio Ruiz del Rio
The exceptional Spanish artist Emilio Ruiz del Rio made a splendid background painting for 'DOC'.
This is hardly known and Emilio Ruiz got no credit for his work. 
Special thanks to my friend Domingo Lizcano for this information.
The maestro painted parts of 'Tombstone' on a thin aluminum sheet.
This sheet was placed precisely in the foreground in front of the camera for 
a perfect illusion of a big City.
The Art of Emilio Ruiz del Rio. 
The painted aluminium sheet of Maestro Ruiz perfectly inserted into the real scene on location.
They shot this 'DOC' scene near 'Mini Hollywood', Tabernas (Almeria).