The Britain Sewers can be found directly southeast of Britain Healers (the entrance is in guard zone. This leads to Hopper's Bog, a swamp in the Lost Lands.
It's a great place for a new character to train. Generally, a good procedure is thus:
- Train thy combat skill upon a dummy, preferably one made of straw, until thy skill is 25.
- Proceed to the Sewers and clean up the place. The low-level creatures that inhabit these wretched halls shall not give thee much trouble.
- Delucia Passage contains Bull Frogs, Giant Rats, Rats, Sewer Rats
- Have the spell, Teleport, handy - it can come in handy at various points in the Sewers.
- Pets and mounts cannot go through the exit to the Lost Lands. Stable them before entry.
- If you're new, stick to fighting on the bridges - that way, the rats cannot team up on you.