General Method Description

Warped tortoises are one of the most underrated drop monsters in all of RuneScape. They are hated by many players for one simple reason: the need to use crystal chimes on them to make them vulnerable to attack. But for that small inconvenience you get the ability to fight a monster that is easy to get to, is much easier to kill than its level would indicate, and has superb drops. They already had pretty good loot before the introduction of the Summoning skill, but the creation of that skill has caused the value of tortoise shells to shoot up to 8,000 to 10,000 each, due to the very high utility of the war tortoise familiar they are used to make. Warped tortoises are the best source of these shells, along with noted coal and mithril ore, swamp tar, law runes and lots of other stuff.

In addition to their random drops, warped tortoises also provide big bones on each kill. Most players leave these behind, but with the value of all types of bones so high these days, it is definitely worthwhile to bank these. Since that means your inventory fills up rapidly, a beast of burden can help immensely -- including the use of a war tortoise until you have level 96 Summoning for a pack yak. :)

Access to these monsters requires you to complete The Path of Glouphrie, which unlocks both the poison waste sewers where they are found and a handy spirit tree teleport to that dungeon.

Note that while fighting these tortoises you may get drops of 1 to 3 "perfect shells". These cannot be sold, but you can trade them to Barlak in Dorgesh-Kaan for 600 gp and 500 Crafting XP! Save them up and then trade them in when you have a bunch.