Normally, a portal is right-clicked for 1.7 packs.
However, galaticraft is on many packs and interferes with the portal, so we typically a /warp to the deepdark on those servers.
Does your server not have one?
I see, and no I don't think so. I've tried /warp deep or deep dark or dark and things like that but it doesn't work. Also, when you try to look at all the warps it says there are no warps listed. Someone said that you have to have some specific item in your hand that you right-click the portal with, but he couldn't remember what the item was. Any idea?