Wilderness wall

The Wilderness ditch is a long, narrow ditch that separates the Wilderness from the rest of the world. You must jump it to get to the Wilderness. The ditch was added on 18 April 2007. It was created to warn players about entering the Wilderness and to help prevent luring when player-versus-player still existed in the Wilderness. There have been many rants about this update, many from PKers. There was even a Wilderness Ditch Glitch.

It is possible to have your character to appear to "glide" across the ditch. If you perform the Home Teleport spell to the point where you have drawn the line, and then click to cross the ditch, you will not jump, but glide across the ditch. This has been confirmed to not be fixable by Jagex, and is considered a "bonus" in the game. Oddly enough, you don't seem to enter the Wilderness area directly when jumped over the ditch, it is one step forward the it.

Note that if you turn the warning to enter the wilderness off, you may turn it back on by talking to the Doomsayer in Lumbridge.