Dynmap doesn't currently render the TFC blocks for b79. So I have done some recon and created the following map:
If you installed Opis from the links above you can also get this map locally. You may download the tiles here:
https://mega.co.nz/#!1xYkgQaL!8zEtlD...Uwo1bcl0DXMtlg
Extract the folder "happydiggers_net_7777" from .zip archive to minecraft\saves\mapwriter_mp_worlds
Then start Minecraft and join the server. The minimap should already show a bunch of the map around you. If you press "M" you'll get to see the full map.