German power metal veterans Helloween and Gamma Ray joined forces back in 2007 and 2008 for one of the most successful tours of that year.  Known as the Hellish Rock Tour, the trek spanned 95 shows in a total of 34 countries and has left fans asking for more ever since.  Those fans have finally gotten their wish as the two bands revealed Thursday the dates for Hellish Rock Tour Part II, which is slated to begin next March in Europe.  Dates for the trek are still being finalized, according to a press release from the promoter involved with the show, and will be announced sometime in the next few months.  In the meantime, check out the clip below featuring both bands performing together during the original Hellish Rock Tour.