Dinding kawah Danau Motitoi curam berupa tebing setinggi 300 meter di atas muka laut, terbuat dari lapisan tuf, lapili, dan bom volkanik serta ditemukan beberapa retas tiang.
The crater wall of Motitoi Lake is steep cliff of 300 meters above the sea surface, made from tuft layer, lapili and volcanic bomb, and several beams are found.