Search results
Results from the WOW.Com Content Network
The Sandhills, often written Sand Hills, is a region of mixed-grass prairie on grass-stabilized sand dunes in north-central Nebraska, covering just over one quarter of the state. The dunes were designated a National Natural Landmark in 1984.
Crescent Lake National Wildlife Refuge is located in the U.S. state of Nebraska and includes 45,818 acres (185 km 2). The refuge contains the largest protected continuous sand dunes in the U.S. A dozen small lakes and numerous ponds are fed by underground aquifers in areas where the sand dunes are below the water table.
John and Louise Seier National Wildlife Refuge is located in the U.S. state of Nebraska and includes 2,400 acres (9.71 km 2).The refuge protects a portion of the largest remaining area of tall and mid grass prairie remaining in the U.S. Collectively known as the Sand Hills region of Nebraska, the dunes were the result of the last ice age known as the Pinedale glaciation.
The dunes are believed to be remnants of a massive lake, Laka Alamosa, that dried up roughly 440,000 years ago, according to the park’s website.Over time, the park says wind, water and sediment ...
Aerial view of the refuge. Collectively known as the sand hills region of Nebraska, the dunes were the result of the last ice age known as the Pinedale glaciation.During the Holocene glacial retreat the sand dunes that been deposited in their current location by the vast continental glaciers, were exposed and grasses eventually took over.
The largest virgin forest in Nebraska. Nebraska Sand Hills: 1984 ... The largest sand dunes complex in the Western Hemisphere. Valentine National Wildlife Refuge:
An explosion of new protected areas in the late 20th and early 21st centuries put the older generation of national parks to shame when it comes to size. Here’s a look at the largest parks on ...
Giant current ripples usually exhibit antidune breaking wave and dune ripple shapes, resulting from their high energy environments. Giant current ripples can reach a maximum height of 20 metres (66 ft) and reach a maximum length of 1 kilometre (0.62 mi). they occur in ripple fields that can cover an area several kilometers across.