While doing some field work on a very wet day near the outer west coast I noted what appeared to be another tree spear (tree-top-spear). I do not know if these tree tops or limbs embedded in the ground have an 'official' term, but I apply the term tree spear for them.
Tree spear is just the right of the two tall trees.
I made a side trip to confirm what I thought I was seeing.
This spear appears to have been the limb of a cottonwood. It was very firmly embedded in the wet ground and did not budge even slightly when I pushed hard against it. The soil here is silt flood deposits.