The Arctic Prison (The Three Kingdoms)

The Arctic Prison is a containment prison built into ice shelf by  during  to imprison beings and items that they were unsure about in case they posed a threat to Yamaha. Eventually, the Arctic Prison adopted the shape of the original ice shelf as it melted due to global warming within.

Setting
The Arctic Prison is essentially a floating fortress in, though is physically attached to , and , of tightly packed statis cells. Due to the enclosure of Yamaha in The Sonic Barrier, which kept heat in, the Arctic ice melted. Yamaha expanded the prison to match the original ice shelf size, fooling and, to a lesser extent,.

The prison has no staff and is defended by and a, both of which can only be bypassed by those with  access codes.