The crater in residual volcanic activity that the volcaniccone within.
此火山口里有个显示残馀火山活动的内火山锥。
2
The volcanic form of complete preservation (a crater, volcaniccone) has 25, volcaniccone types and diverse.
其中火山形态保存完整（有火山口、火山锥）的有25座，火山锥类型多样。
3
This distinctive morphology is usually associated with oceanic islands formed by volcanoes; coral reefs become established around the partially submerged volcaniccone.