Although this does not sound like a particularly rich image, a metaphor can communicate so much about a particular image that poets use them more than any other type of figurative language.

黑体部分的结构是：

communicate（及物动词） so much （代词作宾语）about a particular image（so much 的定语）

跟下面是一个结构：

hear much about him

learn much about the UFO