The tree often signifies the roots of who you are and the genetic heritage that grows within you. Just as we 'see the forest or see the trees' the forest is a more broad perspective of the dynamics we have inherited and how they are serving us on our journey. It is not uncommon to be lost, wandering or searching for something in a forest or cave as you move through various levels of consciousness. Sometimes you will meet the enchanting characters and animals that become archetypes during a period of transformation.
Like the Cave, the forest is a powerful symbol of searching for your roots. It also represents the subconscious or area that is most near consciousness, where ideas are being explored and assimilated.