Origin
Exact details are not that well known but in general historians do know that Deep Gnomes started to migrate to the
Lower Realms after their defeat by the
Selefer . This would place their move to the underground at least after the creation of the
Silent Forest.
Before they came to Farlis though the Tanarians are thought to have joined the god
Tanajin on his expediton from Oneraga to Farlis after which they settled on the later continent.
Rise
During their height in power the empire of Tanaria was quite a sight to behold. Many of their settlements such as
Barenga had become great centers of learning and housed many research facilities. From accounts of
Yamaderis we know that the technological level far surpassed that of the current world. This was likely due to the knowledge they gained from
Tanajin but underground they also found many
Prime Asmer ruins.
Yamaderis himself created and improved many constructs for mining purposes but eventually these kind of constructs started to be used for military purposes as well. Many of these constructs are still operating today, protecting the Lower Realms from undesirables.
What a sad story. You did a great job setting the tone, right from the very beginning. I hope some of them survived, like the stories say.
Indeed they have endured so much bad luck so we can only hope the rumors are true!