Dungeoneering is a skill that consists of exploring the dungeons of Daemonheim, fighting monsters and Bosses. You could start Dungeoneering at both Lumbridge (next to Yaks) and Varrock (castle, north of centre fountain) by talking to the Dungeoneering Master. To start dungeoneering you should not be wielding anything and your inventory should be completely clear. In other words, deposit all your items into your bank before starting dungeoneering. Dungeoneering currently works with melee only.