Unconsolidated material - [¦ən·kən′säl·ə‚dād·əd mə′tir·ē·əl] (geology)
Loosely arranged or unstratified sediment whose particles are not cemented together.
Non-lithified sediment* that has no mineral cement or matrix binding its grains.
Nonadhesive, non-viscous, disconnected, disjointed, separate, unconnected; coarse, granular, rough
*Sediment is usually lithified into sedimentary rock when compacted by the weight of overlying layers or when cemented by percolating ground water.
from Encyclopedia Britannia
Note the tree line.
The trees are located at the western boundary of Wellington Hills Park and they are on the edge of the plateau above what is commonly referred to as, "the Primus Property".