Altar of Siena (B1F)

Introduction
Also known as "AOS1" this dungeon is difficult for players <150 however the drops can make it worth running. It is a relatively short dungeon and a party of 2-4 people is recommended depending on how strong the party members are.

Drops
Some of the better items that can drop in this dungeon include:
 * +7, Epaulets
 * Perfect crafted Redosmium grade weapons and armor
 * +6 Bracelets & Earrings
 * Slot Extender (High) & Slot Extender (Highest)

A comprehensive drop table is found at: Altar of Siena (B1F) Drop Table

Step by Step Walkthrough
Source: