Lundar's journal entry for Day 195, Year 546 (June 20th, 2002) describes his recent experience on an expedition into the mines of Melabrion.

Wangah Rah and Hidden have provided more information about the mines in this message thread on USENET.

Lundar has posted a map of the mines in the Eyes of Puddleby files section. You'll also find there a list of changes after the most recent Chaos Storm, posted by Himitsu.