Chimerical (adjective) : existing only as the product of unchecked imagination

https://www.merriam-webster.com/dictionary/chimerical

“Walk with Me” David L. Ulin

“To see more than these chimeric glimpses, you have to peer beneath the surface”

When i first read this sentence, i thought that it meant to see more than what is directly in your face you have to dig deeper. Using the context i thought it was something of finding the truth instead of looking directly at what is right in front of you. Now knowing the meaning the sentence makes more sense to know that it is an unchecked product of imagination, it helps to understand why he said you have to peer beneath the surface.