Yellow Aster Butte is a triple-summit peak immediately north of the North Fork Nooksack River drainage. It is located near the end of the Mount Baker Highway (Hwy 542), between neighboring peaks Goat Mountain and Tomyhoi and west Winchester Mountain. A trail goes to the rounded south summit and from there, traverses a saddle to a rocky knob which is the peaks highest point, the North Summit. A trail leads to the top. Early season, crampons and ice axe may be needed.