70s Hard Rock Heavies
Here is Rockadrome's ultimate list of killer 70s underground heavy gems in the hard rock, prog rock and heavy psych genres. No folky, spacey or dreamy stuff here, that will be another list, this one is for heavy riffage and in-your-face lead guitar action. You can't really go wrong here with any of these killers and you need them now in any format whether it be originals, vinyl reissues, or compact discs!
I will be trying to track down more and more to fill this out, my personal list for these picks has nearly 200 releases on it, many of which are hard to find expensive originals or out of print reissues, so it may take some time to get it up to 200 items but that's the goal.
For now I'm leaving off the obvious stuff like Black Sabbath, Judas Priest, Rush, Thin Lizzy, Budgie and other major label groups with a string of killer records.