Hi guys, some time ago, I think I have promised to check for you how you can get off-road maps for Bulgaria. Here is a link which you might find useful:
http://www.garmin.bg/?s=7&i=3
Unfortunately the site is in Bulgarian only but you can find a PDF with some instructions to download. There you will find a mail where you could establish contact with the company. Just for your info - the maps are very detailed and covers thousands of kms off-road tracks with various colours depending on the terrain difficulty. You can spend weeks riding and you will be able to cover a fraction only. Check there might help.
Another one, which is free and there people publish/share their own tracks but I find good and useful is: Wikiloc, it needs registration but then it is free and easy to use. Smart phone will suffice for a device.
Hope this helps.
Enjoy

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that is how i feel about my XTR
Mods so far:
Hyperpro front springs; Hyperpro rear shock spring; modified air box; LED tail light; LED indicators + new relay; YZ pegs; Lucas aluminum bar; brisk spark plug; snorkel removed; DNA stage 1; second hand DynoJet O2 mod; crash bars; front and rear steel braided brake lines; soft EBC brake pads; mitas 07 tyres, 2in1 Metal Mule exhaust, Blocked AIS, tall OEM screen, OTR bash plate