Early Fall Log Mystery

"If we knew what it was we were doing, it would not be called research, would it?" ~ Albert Einstein

It was a cool day in early autumn. I was enjoying the crisp smell of the leaves as they crunched under my feet.
I was working with my family cutting, splitting and stacking firewood. As I worked, I noticed some interestingly different logs. Most had a center that was a different color than the outside.

They looked like this one.

But then I saw this currious log.

Hone your observation and reasoning skills by carefully examining the photos.
Hint: When you click on a photo, a larger view will open. Use your Back button to return to this page.

Write your observations.

What do you believe happened to create this unusual log?

Observation Skills Builders: The First Step in the Scientific Method > 40 activities.