An unusually shaped and textured mushroom. Fungi of various sizes, shapes, and colour grow in this conservation area.

The fungi pictured above is likely the Calvatia Craniformis, a skull-shaped Puffball mushroom. http://americanmushrooms.com/images/Calvatia_craniformis.htm

Also see this page: http://www.mushroomexpert.com/calvatia_craniiformis.html