Where is the best place to collect Clay Lumps?

Question

You will need lots of these Clay Lumps to get the associated achievements for making statues. I was wondering what the best spawns would be to hunt to be able to accumulate these?

Answer 1

You can get several Clay Lumps in Edron from the monsters, Muddy Earth Elemental, Jagged Earth Elemental and

The Earth Overlord in the basement of the Earth's Sphere is the area where Druids begin their participation in Quest Elemental Spheres. You must use 20 enchanted small emeralds on a mysterious machine under the Noodles Academy of Modern Magic, also known as Ivory Towers, to gain access to the area.

Earth Sphere - Tibia Wiki

If you are from another vocation try the The Spike cave there you will find monsters that drop the desired item. (Lost BerserkerLost Berserker.gif, Lost Exile, Lost Husher, Drillworm, Massive Earth Elemental)

The Spike - Tibia Wiki