Graveling or Gravelling: How To spell?
The word Graveling is misspelled against Gravelling, a noun meaning "A layer or coating of gravel (on a path, etc.)."
Gravelling has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings grave & ing which should not be misspelled with single 'L'
Wrong Spelling:  grave-l-ing  Correct Spelling:  grave-ll-ing 
Find more wrongly spelled words of Gravelling to spell it well.