Quickest way from 47 to 55

This is the quickest way to level from 47 to 55.

All you need to do is que specific for Blackrock Depths- Detention block.

You take the Iron dwarve mole machine to just past the grim guzzler.

You jump down kill lord incendius and in the other room fineous darkvire and you completed the dungeon objectives.

Try it out for yourself. in 30 -45 mins you will gain 8 levels!