Is this water and ice?
This looks suspiciously like water. There is depth and reflection ...
This appears to be some kind of lava or hot magma flow? Note the give away steam on the surface of this 'mass'. Particularly at the tip of the image.
A cave or cavern entrance? There is indeterminable 'artifacts' within this image too. It is not the best of images ... but the cave entrance can be seen clearly.