A man and a woman in Casco were injured, after the snowmobile they were riding crashed on a lake. Game Wardens say the pair was riding a snowmobile on Thomas Pond near the man’s home Sunday.They hit the shoreline and the snowmobile tipped.The 47-year-old man hit his head on an aluminum boat lift. He suffered a broken neck, broken collarbone and head lacerations.He’s now hospitalized in critical condition.A 41-year-old woman from Naples was bruised in the crash. According to two ice fishermen, the man was sitting behind the woman on the snowmobile but was driving. Authorities say the man was summonsed for operating under the influence and refusing to submit to a blood-alcohol test.