The Ethereal plane existed adjacent to the Prime Material Plane and connected it to the other Inner planes (the Elemental planes plus the Energy planes). The Ethereal touched the Prime at all points through what was called the Border Ethereal. The non-Border region is the Deep Ethereal. The Ethereal was unique among the many planes in that an individual could exist in two planes simultaneously, the Border Ethereal and the adjacent plane, through a process of melding that could be induced voluntarily or could be forced through mundane or magical means. Travel in the Ethereal and Border Ethereal was accomplished by force of will—you wished to go somewhere and you did, at your normal rate of movement. There was a sense of up and down but no real gravity existed. Objects released from possession would hover where they were dropped; it was impossible to fall in the Ethereal plane. To get to another plane, one had to pass through a curtain of vaporous color into the Deep Ethereal, then traverse that region until reaching the curtain that demarcated the Border Ethereal of the destination plane. Each Inner plane and demiplane had a curtain with a unique color.