Giant rock crab

Giant Rock Crabs are massive versions of the weaker Rock crab. They lie in wait for prey, disguised as large boulders. When neared, they attack.

Locations

 * In Waterbirth Island Dungeon (requires a partner to access);




 * In the Chaos Tunnels (The middle south rift just east of Mage of Zamorak(Abyss) leads directly to them). Recommended when not having a companion.



Strategy
Giant Rock Crabs are very strong and extremely resistant to Melee and Ranged attacks, and thus are only effectively killed using Magic. However, Verac's armour is quite effective with its unique set effect, which can hit through the tough rock-hard armour, and also has a prayer bonus allowing the player to use Protect from melee for longer than usual. This method is advised for those with a low Magic level but high melee combat levels. Their ability to drop 10 charms at once makes them an excellent way to gather the charms necessary to train Summoning.

Diamond bolts (e) can also ignore ranged defence of Giant Rock Crabs, although using them might not be very economical.

Giant rock crabs do have a very high defence, but a relatively low attack/strength. If attacked in the Chaos Tunnels they will walk off and stop attacking you after a minute or two.

An easy way to mage/range them is to use the Chaos Tunnels entrance north of Varrock. To do this, get your best mage/range armor that you have, and go to the Grand Exchange. North-west of the counters is a small under-wall tunnel. Go through it, and head north along the river until you see a Mage of Zamorak that you can trade with. Head northeast from there till you see a rift with a rope in it. Go through it, and you should see a small area with a lot of boulders. Head to the north-east most part of it, where there should be a portal. North of that is a crab boulder and a few stalagmites. Wake up the crab there and go north of the stalagmites. You should be able, from here, to mage/range to the crab without taking any damage. A great method is using Fire Bolt and Chaos Gauntlets. Wearing Mystic and a decent shield for when they get too close to you, bring Excalibur from Merlin's Crystal Quest will help otherwise.


 * Mage Gear is as follows:
 * Helmet: Farseer Helmet
 * Necklace: Amulet of glory, Amulet of Fury
 * Cape: God cape
 * Plate: Mystic robe top
 * Legs: Mystic robe bottom
 * Weapon Slot: Staff either Fire or Air (If your using Fire Bolt)
 * Shield: Spirit Shield, Dragon Square Shield, Unholy Book, Arcane Shield
 * Gloves: Chaos Gauntlets, Family Crest gloves when enhanced by Jonathon.
 * Boots: Wizard boots, Infinity boots, Mystic boots
 * Ring: Beacon Ring, Explorer's Ring, Lunar Ring,Ring of Wealth

Retreat
The Giant Rock Crab is one of few monsters in RuneScape that will retreat from battle when they become critically wounded.

100% drop

 * Bones

Runes

 * 1-27 Water runes
 * 8-37 Earth runes
 * Nature talisman
 * Air talisman
 * Mind talisman
 * Fire talisman
 * Cosmic talisman
 * Body talisman
 * Water talisman

Weapons and Armour

 * Steel platebody
 * Black claws
 * Black warhammer
 * Black platebody
 * Mithril axe
 * Adamant longsword
 * Adamant warhammer
 * Rockshell gloves
 * Rockshell boots
 * Rock-shell splinter
 * Rock-shell chunk
 * Rock-shell shard

Charms

 * 10 Gold charms (most common charm drop)
 * 10 Green charms
 * 10 Crimson charms
 * 10 Blue charms

Seeds

 * Poison ivy seed
 * Herb seed
 * Belladonna seed

Other

 * 27, 70, or 137 Coins
 * Uncut gems
 * Herb
 * Raw lobster
 * Raw bass
 * Casket (very rare)
 * Tinderbox
 * Level 2 Clue scroll
 * Clean Irit
 * Grimy cadantine
 * Grimy ranarr
 * Grimy marrentill
 * Grimy kwuarm