Spiders and Snakes...

Any snake experts out there?  I came across this guy while walking the woods at Plesant Ridge Park Tuesday:

I presume it's a Garter Snake, but that's based on Google images....  (click on photo for larger image)

He was basking on the trail, I'm glad I didn't step on him (her?).  I was going to try for a closer photo, but he/she/it was increasingly agitated at being disturbed, and made a quick retreat to the underbrush.