Hall of heroes, need info

Ok my guild has 17 good players now and we are itching to get a guild hall. I know that u need a sigil and that you can get it from battles in the HOH but i have some questions about the HOH
1. where is it?
2. How may ppl from your guild can participate in the battle
3. how do battles work there?

1. You get to the HoH through the Tombs of Primeval Kings (located in Droknar's Forge).

2. It's 8 per team.

3. HoH is the FINAL battle ground. You'll have to go through different levels and fight different teams to get there.

ok thx