Looking good.

If you think the meteor strikes where distracting for you, thing of the poor people living down there... They must have been terrified...

One needs to vary things up a bit. Inspiration can't be forced, so better to play with something else till it returns.

Yea, it's fine. I'm just going to link yours to the Iron Forge since it is below it, so I consider that an entrance.

Welcome.

Sure thing. Happy mapping.

Shadows are applied to all entities on the sheet with the effect. If you need some walls to not cast shadows, you need to place them on other sheets.

Note of course that you can have all your walls on a non-shadow sheet, and then just double up with a new set of walls on the shadow sheet so you don't have to break apart the rooms. The "walls" casting shadows could actually just be thing black lines on a dedicated sheet.