Is an ant hill a loose impediment?
Answer to last weeks question; In match play, if you are unsure how to proceed, can you play a second ball?
No. If a member of the committee is not available, you must continue the match without delay by proceeding in a manner that you believe is in line with the rules. If your opponent disagrees with this, the opponent can make a claim. The claim must be made before either player plays from the next tee or, in the case of the last hole of the match, before all players leave the putting green (Rule 2-5)