Valtage or Vaultage: How To spell?

The word Valtage is misspelled against Vaultage, a noun meaning "Vaulted work; also, a vaulted place; an arched cellar."

Word contains consecutive vowels 'AU' in between alphabets v & ltage is misspelled as 'A' as letter 'U' is phonetically ignored
Wrong Spelling: v-a-ltage
Correct Spelling: v-au-ltage
Explore spell check of Vaultage to spell without errors.