Hel Ra Citadel is one of the two 12 player trials introduced with Craglorn. It is on the west side of Craglorn. There is no lockout for trials but you only get 36 rezzes for your entire trial death. Each death will add additional minutes to your trial timer. Once you run out of 36 rezzes, you have to zone out, disband your group, reform and retry all the way from the beginning.