Shemya Station 177 mi (284 km) NW Attu Station 216 mi (347 km) NW Adak 223 mi (359 km) SE Atka 325 mi (524 km) NE Anchorage 1353 mi (2177 km) NE
DESCRIPTION
From Wood and Kienle (1990) [1]: "Segula volcano is built upon a 100-m-deep marine platform by the accumulation of flows and pyroclastic material emanating from a single center. Although there are no dated eruptions, some flows and pyroclastic deposits are so little weathered that ages of only a few hundred years are estimated. Pyroclastic material covers much of the cone's surface and a cinder cone resides in the middle of the summit crater."