Thanks for your interest in my question. I am implementing Tobler's hiking function using the vertical factor table created by Nico Tripcevich, something I first did in the mid-1990s in Arc/Info using a 30-m DEM (output attached). I wanted to update that earlier analysis using a 10-m DEM and with the full anisotropic implementation that I couldn't figure out how to do 15 years ago. I'm attaching an image of the base DEM, as well as a larger image of the whole 10-m cost-surface showing the "holes"/"ridges" I refer to -- if I try to generate cost-paths away from the cyan dot to, e.g., a point on the north end of my cost-surface, ArcGIS creates short cost-paths from the center of each "hole" to the nearby ridges (no image available at the moment), and does not connect my source with destinations; i.e., there's no way "around" the ridges.