The word Souterrun is misspelled against Souterrain, a noun meaning "A grotto or cavern under ground."
-->
Word contains consecutive vowels 'AI' in between alphabets souterr & n is misspelled as 'U'
Wrong Spelling:  souterr-u-n 
Correct Spelling:  souterr-ai-n 
Check more misspelled words of Souterrain to spell it correct.