Population Migration / Travel
The orcs get their first exposure to sunlight. The dwarves drive the Orcs to North Avistan.
In -4294 AR, as the darkness left by Earthfall dissipates, the Orcs met "the burning kiss of the Sun" for the first time. With the Orcs destabilised by such a drastic change to their surface environment, the dwarves drive them into the desolate lands of North Avistan.