Penumbra and At the Mountains of Madness

[Deep One]

Hell, even though my modding skills are worse than monkeys, I just watched "How to make mountains with hammer editor" -video and started to download Source SDK base... At least I know the basics of hammer editor!

Good for you, I don't know what a 'hammer editor' is, but good to know the basics!

Here is an image I found that shows a plane flying over the Elder Thing City (image not mine) http://a.tuis.free.fr/images_color/AtThe...adness.jpg

Hammer editor is map creation program for Valve's engine, source. It's like HPL editor, but it has more features and stuff.
Edit: very nice picture!