An AMAZING board by TerrainTutor.

[Corvus5200]

This is mind-blowing. The detail is crazy!

[Elbows]

Cool to see that being built - I'd seen pictures and video of the finished product before.  Nice work by TT as usual.

[Predatorpt]

Yeah, Mel is a source of inspiration for every terrain builder, from beginner to veteran. Love his videos.

[Elbows]

I would like to find someone who would sell those 2x2 boards like that though. 

[LiamFrostfang]

  I would like to have room for some 2x2 boards like that as well...

[snitcythedog]

The boards are around.  Found these on a quick search.
http://ttcombat.com/collections/other/products/gaming-board
They sell them individually too.  I have seen other manufactures that use magnets instead of clips for the boards. 
Hope that helps.
Snitchy sends.

[Elbows]

Very cool, I'll have to keep an eye out for some 2x2 ones.

[mweaver]

That is a rather nice board.  Thanks for the link.

-Michael