This waterfall occurs just upstream from Middle Heather Creek Falls and can actually just barely be seen through the trees from the road if the trees are bare and the volume in the creek is high enough.  The waterfall begins with a small sliding drop that slides right into the main 41' tall horsetail.  Like the other waterfalls on this precipitous creek, the base is loaded with fallen timber.  However, the mossy nature of these logs don't hurt this one as much as the others for some reason.  When the volume is lower I suspect that this is a very photogenic waterfall.  However, on my first visit there was enough spray and rain that it was difficult to get good pictures.  Luckily this one is relatively easy to get to so I will definitely return in the future. 

Seesoolk is a Salish word that means "horsetail".  I thought it was more than fitting for this pretty horsetailing waterfall, but I'm not particularly married to the name so if you can come up with something better feel free.