Brink of Lower Falls of Yellowstone River, Grand Canyon of the Yellowstone, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Grand Canyon of the Yellowstone River from Brink of the Lower Falls, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Brink of the Canadian Falls at sunrise in winter, Niagara Falls, Ontario, Canada, North America

Brink of the Canadian Falls at sunrise in winter, Niagara Falls, Ontario, Canada, North America

North Brink, one of England's finest Georgian Streets, Wisbech, Cambridgeshire, England

Close-up of brink of American Falls, Niagara Falls, New York State, United States of America, North America

Close-up of brink of Canadian Falls (Horseshoe Falls), Niagara Falls, Ontario, Canada, North America

Brink of the Canadian Falls at sunrise in winter, Niagara Falls, Ontario, Canada, North America

Brink of the Canadian Falls at sunrise in winter, Niagara Falls, Ontario, Canada, North America

Close-up of brink of American Falls, Niagara Falls, New York State, United States of America, North America

Close-up of brink of Canadian Falls (Horseshoe Falls), Niagara Falls, Ontario, Canada, North America

Tourists on the brink of American Falls, Niagara Falls, New York State, United States of America, North America

Close-up of brink of American Falls, Niagara Falls, New York State, United States of America, North America

Yellowstone River flows through Gorge, Grand Canyon of the Yellowstone, View from North Rim, Brink of the Lower Falls, Yellowstone National Park, Wyoming, USA, North America