Along the Rhine from Bingen to Koblenz
Near Bingen it becomes narrow for the Rhine. Starting here it must wind
through the deeply cut ravine of the Rhenish slate mountains. This
area, with its shallows (e.g., Binger Loch), its vertical cliffs (e.g.,
Loreley) and its difficult flow patterns (e.g., the Rhine loop near St.
Goar and Boppard) is dangerous to shipping and boating. No fewer than
18 fortresses and castles along both sides of the river line the way
from the Mice Tower at Bingen, past Assmannshausen, Bacharach, Kaub
Oberwesel, St. Goar and Boppard to Koblenz where the Mosel flows
into the Rhine.