Tunneled or Tunnelled: How To spell?
The word Tunneled is misspelled against Tunnelled, which is past tense of "Tunnel"
Tunnelled has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings tunne & ed which should not be misspelled with single 'L'
Wrong Spelling:  tunne-l-ed  Correct Spelling:  tunne-ll-ed 
Check more misspelled words of Tunnelled to spell it correct.