Lion Cavern, winner of the True North Handicap (gr. II) and a group III winner in Europe, died in Greece following a bout of colic, according to the Racing Post.The 15-year-old son of Mr. Prospector died four days after arriving in Greece at the end of last month. He had been purchased by Elia Stud Farm, near Athens, from Wimbledon Farm in Lexington, Ky., according to the Post. Lion Cavern stood at Wimbledon for five seasons after entering stud at Dalham Hall. Produced from the Secretariat mare Secrettame, Lion Cavern raced for Sheikh Mohammed bin Rashid al Maktoum.At the time of his death, Lion Cavern was third-leading sire in Europe by percentage of winners to runners, with 52%, according to the Post, which reported he was the sire of 18 stakes winners from eight crops of racing age.