Tunelled or Tunnelled: How To spell?

The word Tunelled is misspelled against Tunnelled, which is past tense of "Tunnel"

Tunnelled has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings tu & elled which should not be misspelled with single 'N'
Wrong Spelling: tu-n-elled
Correct Spelling: tu-nn-elled
Check more misspelled words of Tunnelled to spell it correct.