Seebert Seebert Edition: Jack Horner's Corner 10:00 AM Located just off the Greenbrier River Trail, Jack Horner's Corner in Seebert offers bikes, floats, and more for those wanting to get out on the river. And, they're also a great spot to fuel up and fill your tummy. I got a pizza - which was much larger than I anticipated - with mushrooms. And it. hit. the. spot. Afterward, there was ice cream! I am always a fan of a swirl. 0 Comments Share: