Alaska 's Cook Inlet is home to 15-minute long tidal bores . A tidal bore is a natural wonder when an incoming tide is pushed up by current . The tides are high, and the water pushes back against the shore at about 10 - 15 feet per second ( or mph). `` You ride it for as long as you can go , which can be miles . '' One surf ride can last miles , she says .
Alaska 's Cook Inlet is home to 15-minute long tidal bores . A tidal bore is a natural wonder when an incoming tide is pushed up by current . The tides are high, and the water pushes back against the shore at about 10 - 15 feet per second ( or mph). One surf ride can last miles , she says .