<Table> <Tr> <Th_colspan="2"> "The Mountain and the Viper" </Th> </Tr> <Tr> <Td_colspan="2"> Game of Thrones episode </Td> </Tr> <Tr> <Td_colspan="2"> Gregor "the Mountain" Clegane and Oberyn "the Red Viper" Martell fighting in a trial by combat . </Td> </Tr> <Tr> <Th> Episode no . </Th> <Td> Season 4 Episode 8 </Td> </Tr> <Tr> <Th> Directed by </Th> <Td> Alex Graves </Td> </Tr> <Tr> <Th> Written by </Th> <Td> David Benioff D.B. Weiss </Td> </Tr> <Tr> <Th> Featured music </Th> <Td> Ramin Djawadi </Td> </Tr> <Tr> <Th> Cinematography by </Th> <Td> Anette Haellmigk </Td> </Tr> <Tr> <Th> Editing by </Th> <Td> Tim Porter </Td> </Tr> <Tr> <Th> Original air date </Th> <Td> June 1, 2014 (2014 - 06 - 01) </Td> </Tr> <Tr> <Th> Running time </Th> <Td> 52 minutes </Td> </Tr> <Tr> <Th_colspan="2"> Guest appearance (s) </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Pedro Pascal as Oberyn Martell </Li> <Li> Indira Varma as Ellaria Sand </Li> <Li> Michael McElhatton as Roose Bolton </Li> <Li> Ian McElhinney as Barristan Selmy </Li> <Li> Julian Glover as Grand Maester Pycelle </Li> <Li> Roger Ashton - Griffiths as Mace Tyrell </Li> <Li> Yuri Kolokolnikov as Styr </Li> <Li> Jacob Anderson as Grey Worm </Li> <Li> Nathalie Emmanuel as Missandei </Li> <Li> Mark Stanley as Grenn </Li> <Li> Ben Crompton as Edd Tollett </Li> <Li> Josef Altin as Pypar </Li> <Li> Paola Dionisotti as Anya Waynwood </Li> <Li> Rupert Vansittart as Yohn Royce </Li> <Li> Hafþór Júlíus Björnsson as Gregor Clegane </Li> <Li> Grahame Fox as Ralf Kenning </Li> <Li> Lino Facioli as Robin Arryn </Li> <Li> Alisdair Simpson as Donnel Waynwood </Li> <Li> Richard Doubleday as Vance Corbray </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Episode chronology </Th> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Td> ← Previous "Mockingbird" </Td> <Td> Next → "The Watchers on the Wall" </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td_colspan="2"> Game of Thrones (season 4) List of Game of Thrones episodes </Td> </Tr> </Table> <Tr> <Th_colspan="2"> "The Mountain and the Viper" </Th> </Tr>

Who fought the mountain in game of thrones