Only one event in our area this week as the desert racers of MRANN return to Moon Rocks and bring back their traditional Halloween event, the Purge 100 Hare Scrambles.   As an added incentive to those racers left out due to the fact there was no fall motocross season, except for the race the local OTHG chapter staged last week, MRANN is offering a free one-day card. The action begins Saturday morning at 10:30 a.m. when the Pee Wee racers take to their short track. Then at 12:30 p.m. the Mini Bikes, Saturday Women and Bombers start their event