Great Axes were the weapons of the dwarven kings. They were impossible to wield by any normal Dwarf, and it would have needed even a human as strong as an ox to use it. It has been said that dwarven warriors able to wield such a weapon were even able to kill Cyclopes unarmed. With this weapon they could kill a Dragon in a single blow. At least two of these priceless axes still exist on Antica. One of them is owned by Yoozek on Antica. For a very long time this was considered the best and strongest axe in Tibia.
After Update 8.4, it became very easy to loot off Hellgorak. A patch was introduced a bit later, it is now a very rare drop from Hellgorak.
First looted on Refugia, a few other worlds also quickly obtained a great axe, like Pacera.