表面流出
Mass wasting continues to modify the shape of the valley walls. Surface runoff from snow melt and precipitation as well as groundwater springs contribute to instability that result in ravines and slumping. The Ancient Valley Self-guiding Trail ascends the slope of the valley to a viewpoint that offers vistas of the Assiniboine River Valley. Interpretive signs provide information on the glacial origin of the valley and the processes of erosion that continue to shape it.