The outer loch's northern coastline on Ulva is made of basaltic ridges and many rocks and islets, with many different types of vegetation. The southern coastline, bounded by the Ardmeanach peninsula, has cliffs, land slips and substantial slopes that are covered in scree. The inner loch coastline is bounded on both sides by Mull. The north shore, steeply sloped, has some moderate hills, with Killiechronan Wood to the east. The southern shore consists of cliffs and slopes leading to the Munro and extinct volcano of Ben More and Scarisdale Wood to the south east.