Finish the Story : The petroglyphs told the story of an unusual event.

Photo prompt (c)  2015 Barbara W Beacham

Finish the story is a weekly challenge to complete a story in 100-150 words prompted by the photo and the first sentence.

This weeks sentence is “The petroglyphs told the story of an unusual event.” Here is my story :

The petroglyphs told the story of an unusual event. My thoughts were elsewhere.
I even had to ask what petroglyphs were and Simon was impatient to explain everything about them to me.
He twisted and gyrated his little body on the bedside chair and excitedly explained pictograms and logograms.
He’d been studying hard at school and lived and breathed the subject, Before that it was the Titanic I think.
I took a deep breath and closed my eyes, letting my burdensome head sink further into the pillow.
It was hard to concentrate due to the medication but the near absence of pain was preferable to having a clear head.
I opened my eyes and reached out for his warm little hand and the smiles we exchanged expressed, without words, the deep love between us.
“You will tell me that story won’t you little darling!“ I murmured.
“Sure thing Grandad” he replied. (142 words)