Inside lesser demons cage in level 41 at West side of the wilderness. You'll need to dig at the location shown in the map below while having the clue scroll and navigation tools in your inventory. Be ready to fight lvl 65 wizard that will attack you with the flames of zamorak spell, you'll need to use the protect from magic prayer. Avoid bringing items that you are not prepared to lose. If you are attacked by another player you can teleport away unless you're above level 20 wilderness, at higher levels you have to log out before you are being attacked. At at West side of the wilderness around level 13 there are green dragons and often also pkers.

Required items: clue scroll, watch, sextant, chart, spade, weapon, two pieces armour, anti poison, teleport runes and food.

Required quests: none.

Possible way of transport: Walk North from the chaos temple near Goblin village, have run on from level 7 to 20.