At 3,600 square miles, this least spoiled of all wilderness areas is the largest of all preserves. It is one of the most awe inspiring experiences of an Alaska vacation. Beginning near the British Columbia border, the Behm Canal winds around the Eastern side of Revillagigedo Island, becoming increasingly narrower as it heads northward, finally taking a left turn back into the Inside Passage near Ketchikan. Along its 900-foot deep chasm, 3,200-foot tall cliffs soar upwards and the dramatic spire of New Eddystone Rock is repeated in the spiky tops of spruce and fir trees which cast stalactite reflections in waters broken only by the wake of ships and the splashes of breaching humpback whales.