The crater inside Hellas has been filled with material, which may be related to volcanic activity on the basin's northwestern rim.
这些希腊平原上的陨石坑内填充着一些物质，而这些物质与盆地西部边远的火山活动有关。
A lost world populated by fanged frogs, grunting fish and tiny bear-like creatures has been discovered in a remote volcanic crater on the Pacific island of Papua New Guinea.
在巴布亚新几内亚的博萨维火山口，科学家们发现了一处被遗忘的动物世界，那里有四十多个前所未见的新物种。
Forming a paisley pattern, the dark volcanic rocks north of SP Crater result from lava flows. (This image has been rotated and north is at right.)
火山熔岩从火山口的北边流淌下来，形成漩涡状的暗黑色岩体(图片已旋转，右边是北方，)。
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