Pavel Izbekov (UAF/AVO) at section 18IPE9, approximately 30 km NNE of Pavlof. Lighter tan and finer-grained tephra are visible below and above his trowel handle.
Image courtesy of the AVO/ADGGS.
Please cite the photographer and the Alaska Volcano Observatory / Alaska Division of Geological & Geophysical Surveys when using this image. Full Resolution.