Michael Bello's millionaire mare Megahertz, who finished third in 2005 Eclipse Award balloting for best female turf runner, has been booked to Giant's Causeway. The 7-year-old daughter of Pivotal out of Heavenly Ray arrived at Mill Ridge Farm near Lexington shortly after an unplaced effort in the Oct. 29 Breeders' Cup Filly & Mare Turf (gr. IT). Mill Ridge is owned by Alice Chandler and her husband, Dr. John Chandler.Bred in Great Britain, Megahertz captured 13 stakes, including four graded events in 2005, and earned $2,261,594 during her career. Megahertz' broodmare sire, Rahy, also is Giant's Causeway's broodmare sire.