Wallula Gap (/wəˈluːlʌ ɡæp/) is a large water gap of the Columbia River through the Horse Heaven Hills basalt anticlines in the Columbia River Basin in the U.S. state of Washington, just south of the confluence of the Walla Walla and Columbia rivers. 2020 WALLULA GAP HIKE TOUR $ 99.99. Wallula Gap. Geocaches. Saturday, May 2. Public Television Interview - 2015. Only one other flood feature in the Mid-Columbia Basin, Drumheller Channels, shares this distinction.

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IAFI 2014 Annual Meeting Field Trip Guide. Flood-eroded basalt walls . Watch as it grows larger and seems to open up and then close as you approach from the north. Tour Guide: Bruce Bjornstad. Highlights.
Its drainage basin is 1,758 square miles (4,550 km2) in area. "Wallula Gap, a natural water gap of the Columbia River, is one of the most significant and spectacular features created by the great Ice-Age floods. Walla Walla County; Washington; United States; Owner Bruce Toews. The National Park Service recognized this in 1980 by designating Wallula Gap a National Natural Landmark. Ascend to the top of a precipitous, breathtaking, 900-foot tall bluff-face along the west side of Wallula Gap, passing a complex maze of flood-sculpted coulees, rock benches, basins and abandoned spillways. Since all of the floodwaters had to pass through such a narrow passage, a huge lake formed behind Wallula Gap extending to a surface area of approximately 4,500 square miles and a depth of about 900 feet. Public Television Interview - 2015. We will explore two areas at Wallula marked by a Heritage Marker established by Walla Walla 2020. Spectacular 150-mile rail-trail, bike tour.

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Region. Wallula Gap – Heritage Marker Trails (North and South Bluffs) 5: RETURN: NEXT: Hike description . Wallula Gap (/ w ə ˈ l uː l ʌ ɡ æ p /) is a large water gap of the Columbia River through the Horse Heaven Hills basalt anticlines in the Columbia River Basin in the U.S. state of Washington, just south of the confluence of the Walla Walla and Columbia rivers. Transportation/lunch provided. Giant basalt boulder.

Best Observation Points By Automobile. When the waters from Lake Missoula swept across Eastern Washington; the channeled scablands led the water into Pasco Basin and escaped out of a single outlet before filling the Columbia Basin Gorge. Wallula Gap or perhaps more appropriately, "The Loo", is a basalt cliff band perched above the Columbia River a few hundred meters off the side of Highway 730.

Twin Sisters Rocks ~7 miles, ~800 ft. elevation gain. This is also where all the water from Ice Age floods was forced through a single bottleneck.