This is the Dojo Courtyard. Enter the Dojo to play Card-Jitsu... and learn the ways of the ninja!
The Dojo Courtyard is the entrance to the Dojo. The door to the Ninja Hideout was behind the stone tablet with Japanese writing written on it until its renovation. You needed to enter the wooden door if you moved your cursor. The Dojo Courtyard is accessible by the Map, the EPF Spy Phone and the Mine Shack.
The Dojo Exterior was first covered with snow for many years. After the Halloween Party 2008, part of the Dojo was struck by lightning, producing a hole in the top left corner which you would either walk up to or click to enter the Dojo Exterior. The name of this covered-up snow was discovered when the room is loading it said the Dojo Exterior. But when you would click 'Find' on someones player card on your buddy list, it would say Dojo Roof.
The Dojo Courtyard has a double-door entrance to the Dojo, even though inside the Dojo, there is only one door. This was fixed in May 2013.
It was unknown where the stairs at the base of the Dojo lead, but it was later confirmed that they lead to a zig zag shaped snow slope mountain that ends close to civilization. The stairs will take you to the Mine Shack as of July 11, 2013.
Originally, it was only accessible via Map, but on July 11, 2013, a path from the Mine Shack was added.
Since the Card-Jitsu Party, by clicking one of the elements above the Ninja Hideout entrance three times, you would go to the corresponding Dojo for that element, until the renovation which removed the Ninja Hideout.