51.   Wilderness roads, usually unpaved, create erosion problems in hilly terrain.

52.   With so much hilly terrain, cellular carriers must build more wireless towers than in some other, flatter areas.

53.   Over the three days, soldiers were dug in over hundreds of yards of hilly terrain, and no one -- Korean or American -- saw everything.

54.   Both crashed and burned, scattering debris over the hilly terrain.

55.   But everything gave way to a thrilling duel between Woods and Els, staged on the hilly terrain above the Pacific Ocean as humpback whales frolicked below.

56.   But the final round belonged to Woods and Els, and they staged a terrific show along the hilly terrain overlooking the Pacific.

57.   Flames spread to several buildings and sent smoke billowing over the hilly terrain.

58.   In Australia, Brig. Mike Hannan said a group of Australian troops came under heavy machine-gun fire in hilly terrain Thursday.

59.   In Australia, Brigadier Mike Hannan said the first group of Australian troops came under heavy machine gunfire in hilly terrain Thursday afternoon.

60.   Israel responded by firing a missile from the air at suspected Hezbollah hideouts in the hilly terrain.