Ravens' John Urschel shares his love of math with Franklin High students
The Baltimore Sun

Gaping Gill, Yorkshire

Britain's highest unbroken waterfall plunges 328 ft into Gaping Gill, one of Britain's largest and most complex cave systems. Although it is usually off-limits to all but experienced cavers, the Bradford Pothole Club sets up a winch for a few days each summer to allow members of the public the chance to enter. The cave is a 90-minute walk from the village of Clapham, via the Ingleborough Estate Nature Trail.worldtoptop.com
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