The CanyonA canyon or gorge, a deep cleft between escarpments or cliffs resulting from weathering and the erosive activity of a river over a long periods of time. This series shows both canyons and gorges of Switzerland.ID#: 4005 Canyon 40x50 cm ColdWax & OilID#: 4040 The Valley 42x56 cm ColdWax & OilID#: 4052 Ravine I 42x56 cm ColdWax & OilID#: 4053 Ravine II 42x56 cm ColdWax & Oil