Is everyone OK? Saw a bad accident at Alum Creek yesterday...

I rode up for a training ride yesterday and couldn't get through on Lewis Center Road. There were SIX ambulances and a bunch of sheriff cars. It was at the top of the levee hill, near the Visitor Center entrance. (One or two east of the beach entrance.) Since that would be a stop sign, I couldn't think of how an accident could have occurred requiring six ambulances unless cyclists were involved.

Is everyone OK? Did anyone see anything? This was at about 11:45 a.m. when I was up there.