Mature grotworm

Beta

This article has a strategy guide here.

Mature grotworms are monsters that can be found on the bottom level of the Grotworm Lair. They have slow, but extremely accurate, magic and melee attacks. However, magic attacks are only used on players outside of melee range, similar to monsters such as metal dragons and cockroach soldiers. It is possible to safespot them using the pillars if you stand far enough back from them. Lower-level players are recommended to bring high healing food such as monkfish or sharks. Ranged/Magic would require Protect from Magic/Deflect Magic if using safe spots. The magic attack has a short range, so flashing your prayer when out of its range can help conserve prayer points.

If a player tries to setup a cannon within the Grotworm Lair a message will be visible in the console saying; The damp air would prevent your cannon operating.

Some players may find it useful to bring runes to cast High Level Alchemy on the items dropped by the grotworms, as Adamant and Rune equipment are common drops.

100% Drops

 * }

Weapons

 * }

Armour

 * }

Herbs

 * }

Seeds

 * }

Raw Materials

 * }

Other

 * }

Trivia

 * When these creatures were first released, they did not drop items from the rare drop table, but did after the Queen Black Dragon update.
 * The word 'grotworm' means caveworm in Dutch.
 * Their examine text hints towards the possibility of the existence of a stronger grotworm based creature, although likely not an actual worm as "metamorphosis" implies, but none were released with them.
 * Due to excessive botting, an update on 7 August 2012 removed several rune armour drops from the drop table of mature grotworms, replacing them with their adamant counterparts, making it less effective to earn money.