Kryptos sculpture

The next clue will include geomancy and the celtic working cross, compass, rose cross, compass rose.



See http://en.wikipedia.org/wiki/Compass_rose

See

Before the development of the compass rose, a wind rose was included on maps in order to let the reader know which way the cardinal directions pointed within the plan view. No differentiation was made between cardinal directions and the winds which blew from said direction. North was depicted with a fleur de lis, while east was shown as a Christian cross to indicate the direction of Jerusalem from Europe.[1]

The last clue is interactive and the coordinates were given for that purpose. A sculpture would take geomancy and those crafts into consideration and have knowledge "along those lines."