Well, even in basalt surfaces in lava-tube caves, which are a by-product of volcanic activity, in many cases, by these beautiful, glistening silver walls, or shiny pink or shiny red or shiny gold.
即使是在由火山活动形成的 熔岩管洞穴内的玄武岩的表面 在很多情况下 我们都可以发现 有漂亮、闪耀的银色、亮粉 亮红、两金色的物质覆盖