Appearing at first glance to resemble the human brain, the natural phenomena that created the unusual texture on the floor of this Martian impact crater are currently under investigation.

• 乍看之下，这个火星陨石坑的底部很像是人类的脑部组织，不过造成这个不寻常纹路之自然现象为何，现在仍然在研究之中。