with slaty-backed gulls flying out to greet our arrival this mid-afternoon:
I managed this shot of a gull in flight as it paced the ship just a few feet off the deck:
Yanchika, like Shimushir, contains a collapsed volcanic caldera at sea level as this marine chart shows, though it's not possible to enter with the ship:
We anchored offshore and had timed our arrival to coincide with high tide in order to enable the Zodiacs to pass over the gravel bar at the entrance to the caldera. Inside are several andesitic lava domes erupted since 1769, and an active geothermal area (note the solitary person for scale):
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