Easter Rock

From an interested hiker, Suzy K:

This rock reminds me of Easter. I found it beside#112 westbound on  the river that runs from N. Woodstock, NH. There is a foot bridge right there--old restaurant river-side nearby.
The quartz I understand is ocean sand heavily pressed but how in the world did it go 90 degrees?
Just thought it was pretty--not man-made--better.
[PWAX - The rose petals were commented on, as unexpected.]