The magnificently named Consortium for the Defence of Barolo, Barbaresco, Alba, Langhe and Roero has published on line maps showing its proposed cru designations and boundaries, overlaid on a topigraphical map:
If you can get the site to work (let’s just say that there’s a reason Italy is not a leader in IT), it’s kind of cool. I couldn’t get past the opening frame of the site in Firefox on my PC, but it more or less works in Internet Explorer. Perhaps people with Macs will find it better.