By casting this spell the druid causes the appearance of an hallucinatory forest to come into existence. The illusionary forest appears to be perfectly natural and is indistinguishable from a real forest. Other druids — as well as such creatures as centaurs, dryads, green dragons, nymphs, satyrs, and treants — will recognize the forest for what it is. All other creatures will believe it is there, and movement and order of march will be affected accordingly. The hallucinatory forest will remain until it is magically dispelled by a reverse of the spell or a dispel magic. The area shape is either rectangular or square, in general, at least 4” deep, and in whatever location the druid casting the spell desires. The forest can be of less than maximum area if the druid wishes. One of its edges will appear up to 8” away from the druid, according to the desire of the spell caster.