Nikolski 53 mi (86 km) NE Attu Station 131 mi (211 km) NW Shemya Station 167 mi (269 km) SW Unalaska 167 mi (269 km) NE Anchorage 953 mi (1534 km) NE
From Wood and Kienle (1990): "Herbert is a classic stratovolcano with a 2.1-km-wide caldera, which the topographic map indicates is breached to the northwest. Radar images do not show the breach. No geologic studies have been published on this volcano. A grab sample from the tip of the island's southwest point is an andesite (59% SiO2, with 0.82% K2O)."