Abstract: A play and climbing equipment structure including a support structure with at least three sloping beams that form a vertex where the three beams meet, and that form a polyhedral shape having a triangular shaped bottom. At least one flexible planar surface is positioned within the interior of the support structure and is attached to the sloping beams. A contoured object is placed immediately under the vertex, and restricts the excessive inward movement of the beams, thereby preventing unintended collapse of the structure.