"The Hudson River has cut a narrow, 15-mile long gorge through the range between Peekskill and Newburgh that served as a channelway for ice erosion during Pleistocene glaciation. The gorge is a true fjord, like those of the Norwegian coast, a glacially-gouged valley now invaded by the sea, and through which daily tides reach 160 miles inland to Troy!"The tides rise and fall an average of six feet daily through the Highlands as fresh water flows above the salt water on its way to the Atlantic Ocean.
View of the Hudson Gorge from West Point showing the Fjord.
Elevation of 1410 feet and 1368 feet on the left of the
gorge anchor the western side of the fjord while Mount Tauris (Bull Hill) and Breakneck Mountain anchor the right or east side of the fjord.