Question

a remote wilderness
by susan york
wood buffalo national park is a canadian treasure. for starters, it has acres of rolling grass - land, stringy hills and flats, bogs, and lakes. the park is one of the largest national parks in the world, covering more area than the entire country of switzerland! because of its size, the park can effectively protect entire ecosystems. the park is very remote, located away from dense human settlements. wood buffalo not only protects part of the natural world on a large - scale but also serves as a home to an amazing array of species.
in 1922, wood buffalo national park was established with a specific purpose: to protect one of the last remaining herds of wild bison in canada. to this day, it continues to be home to free - roaming herds of wild bison while also providing a refuge for many other mammals including lynx, bears, moose, wolverines, and wolves.
wood buffalo is also famous for its endangered whooping cranes, now the source of many decades of conservation efforts. these birds band together to build one of the worlds largest crane nests. from end to end, the nest is more than 3,000 feet long and is so large that it can be seen in satellite images taken from space. in fact, these are of the only days it can be seen because of its extremely remote location.
unlike the delicate bison herds, wood buffalo has areas that are accessible to visitors and are ideal for observing birds. the park plays an important role in providing habitat and is one of the very remaining natural nesting areas for the endangered whooping crane. the cranes make it a part of the park where different sections of water come together: the peace - athabasca delta. this large ancient freshwater delta is where three rivers - the peace, the athabasca, and the birch - merge with lake athabasca.
in addition to the whooping cranes, over two hundred other species of birds visit the area during their annual migrations.
watching endangered birds is just one of many special experiences visitors can have at the park. on a summer hike, visitors might observe bison grazing in the grasslands or a wolf drinking at the edge of a lake. visitors can learn to canoe on one of the parks many spring - fed rivers, such as a beautiful turquoise - colored one. in the winter, park visitors can cross - country ski, go skating on one of the many ponds, or snowshoe through the quiet meadows.
for some, there is one experience at wood buffalo that stands out from the rest: viewing the aurora borealis, also called the northern lights. this colorful event occurs when charged particles from the sun interact with earths magnetic field, causing colorful streaks of light to appear in the night sky. wood buffalo is known for being one of the largest \dark - sky preserves\ on the planet. the area has no light pollution - no artificial light from buildings, signs, or street lamps. lucky sky - watchers are treated to a breathtaking light show above them, while surrounded on all sides by the snowy beauty of the park.
what is the best summary about?
it is about wood buffalo, a national park which is almost totally intact due to the absence of birds.
it is about wood buffalo, a national park where bison and other large mammals can be found for sport.
it is about wood buffalo, a popular national park located just minutes away from canadas largest city.
it is about wood buffalo, a national park that protects wildlife and offers rich outdoor experiences for visitors.

Explanation:

The text describes Wood Buffalo National Park, its history, wildlife, unique features like the Peace - Athabasca Delta, and outdoor experiences for visitors such as seeing endangered birds and the northern lights.

Answer:

It is about Wood Buffalo, a national park that protects wildlife and offers rich outdoor experiences for visitors.