41. Frequent freezing and melting during the winter results in pit-and-hummock topography throughout much of the refuge. 42. These occur as a series of irregular parallel sand ridges and hummocks separated by hollows, which are seasonally wet. 43. Sunnyside sold its cane to Windermere in 1911, and then Millaquin acquired both Windermere and The Hummock by 1912. 44. When the spaniels took scent and surged, we had to trot across the hummocks to be in position to shoot. 45. According to preliminary information, the helicopter crashed after hitting a hummock on a low-level flight, Suvorov said. 46. His children and their cousins play tag on a hummock where his wife's parents and their parents are buried. 47. It was originally called Hummock Hill School, and was subsequently renamed as Whyalla Primary School and Whyalla Higher Primary School. 48. An ice hummock is a boss or rounded knoll of ice rising above the general level of an ice-field. 49. Geologists recognize that hummocks may be polygenetic and form by a combination of forces that are yet to be well understood. 50. Two days later, the main group began its torturous trek across the ice hummocks with the three boat-sleds.
