1- Traditionally, any mound appearing in a dream is supposed to link back to our very early childhood needs and the comfort that mother’s breast brought.
2- Emotionally, man’s need for comfort and sustenance continues throughout his life. At the same time, he needs to come to terms with his dependence on the feminine. Often to dream of mounds helps him to understand this.
3- The mound symbolises the Earth Mother or the entrance to the Underworld.... Ten Thousand Dream Dictionary