Voyampolsky and Kakhtana are two Icelandic-type basaltic to basaltic-andesite shield volcanoes that form the NW-most volcanoes of the N-S-trending Sredinny Range, which stretches across the western side of Kamchatka.  The two shield volcanoes, 1225 and 1217 m high, respectively, are located near the headwaters of the Kakhtana River and were constructed along an E-W line west of the crest of the Sredinny Range.  Icelandic-type basaltic to basaltic-andesite shield volcanoes extend the length of the Sredinny Range, which has a large basaltic component (Erlich and Gorshkov, 1979).  Early geologic studies in the Sredinny Range (Ogorodov et al., 1972) identified numerous Holocene eruptive centers based primarily on morphological criteria.  However, later work has suggested that Sredinny Range volcanoes are less mantled by Holocene tephras than eastern Kamchatka volcanoes and therefore appear more youthful, so that Holocene eruptions are uncertain for many of these Sredinny Range eruptive vents.