Sorry, I’m afraid my take is a little obvious. No excuses here. Just, it’s what I saw when I looked at the photo prompt. Once you have seen it, it cannot be unseen.
Every Friday, authors from around the world gather here to share their 100-words and offer constructive criticism and encouragement to each other. Readers are encouraged to comment as well. The prompt is from Kent Bonham. For details, check out Rochelle Wisoff-Fields http://rochellewisofffields.wordpress.com/

“What is it, Mom?”
“Ahh…it was once a tree, a long time ago, Honey.”
“What’s a tree?”
“If you really want to know, you ought to ask your pre-fall holographic history module.”
“Aww, mom!”
“Fine. A tree was…well…it was a kind of plant that grew really tall.”
“Like cactus?”
“Yes…but trees had flat, green disks called leaves instead of spines.”
“…what happened?”
“Trees needed lots of clean water and sunlight to live.”
“So…when everything got bad…the trees died?”
“Yes.”
“All of them?”
“Yes.”
“What was it like?”
“There once were giants to blot out the sun.”
“I guess we aren’t missing much then, living underground.”