Best Pothole
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Gaping Gill is a prominent natural pothole and cave system located on the slopes of Ingleborough in North Yorkshire, England. It is distinguished by its massive 98-metre vertical entrance shaft, which is the largest unbroken underground shaft in Britain. At the base of this shaft lies the Main Chamb...
Cayler Prairie State Preserve in Iowa is a 160-acre National Natural Landmark protecting a diverse, untilled mesic tallgrass prairie within the Des Moines Lobe region.
Doolittle Prairie State Preserve in Minnesota safeguards a 36-acre fragment of wet mesic tallgrass prairie, serving as a vital habitat for the rare greater prairie-chicken.
A large open pothole near Castleton, Derbyshire, England, about 70 meters deep and historically listed as one of the Seven Wonders of the Peak District.
An open limestone pothole in the Yorkshire Dales, England, approximately 60 meters deep, first systematically explored in the 19th century and still a notable caving destination.
A complex cave system with multiple entrances in the Yorkshire Dales, England, renowned for one of the region's longest and most challenging through-trips.
A stream cave and pothole system beneath Kingsdale in the Yorkshire Dales, England, featuring multiple pitches and passages of considerable depth.
A pair of adjacent potholes in Ribblesdale, Yorkshire Dales, England, with a principal shaft of about 55 meters and a streamway connecting the two entrances.
