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Though the name
tends to be misleading, Natural Bridge is one of several natural arches in
Bryce Canyon and creates a beautiful scene at this viewpoint. This arch,
sculpted from some of the reddest rock of the Claron Formation (rich in
iron oxide minerals), poses a stark contrast to the dark green of the
Ponderosa forest that peeks through the arch from the canyon below.
Geology
Bridges form through the erosion of rock by streams or rivers. This
window or
arch formed from a combination of processes. Frost wedging, the expanding
of cracks in rock as water turns to ice, weakened the rock. Dissolution,
the chemical dissolving of rock by rainwater, chewed away at the top and
sides of this wall of rock. Finally gravity pulled loose the weakened
pockets of rock at the center creating the hole you see. Thus, Bryce
Canyon's 'bridges', including Natural Bridge, are spectacular examples of
arches that, like the hoodoos, are constantly at risk of destruction, as
the forces of erosion continue to wear the rock away.
Nature
In the southern corner of the parking lot you will notice a small stand of
Quaking Aspen.
Historic photographs suggest that aspen were much more common throughout
the southern portion of the park prior to intense fire suppression efforts
of the past 75 years. Aspen are easily shaded out by spruce and
Douglas-fir. You will notice several areas of burned trees as you drive
through the park. This is evidence of our prescribed fire program. By
returning small and safe fires to the ecosystem we can slowly restore a
natural mix of forest types providing better habitat for a greater
diversity of animals. Also near the parking lot you might find Markagunt
Penstemon.
Trails
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Services
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