The Gateway

Simply referred to as "The Gateway", it is a portal linking Ethalia to Vespirian. It was discovered in a cavern deep beneath the castle in the capitol city. The high mages of Ethalia have managed to keep the portal working, but they haven't been able to keep it open for long periods of time. They can only get it to open randomly every few months and it only stays open for a day at most, but the duration appears to be random. Based on the runic markings, it used to be active all the time. The mages suspect the portal may be damaged by time, or that there is some secret to operating it that they have not yet discovered.