I am getting strange vertical lines on my hillshade, anyone experienced anything similar?
I am very new to ArcGIS.
It is possible that these artifacts are a result of Nearest Neighbor sampling, which does well for categorical data, but is not ideal for continuous data. Selecting a resampling method other than Nearest Neighbor, such as Bilinear or Cubic convolution many provide a smoother looking Hillshade.
Long time coming, but I solved this problem by applying the Focal Statistics tool to the DEM before hillshading :-)
Thanks everyone for the help! Al