Everyone be careful out at Lost Valley. A friend at work was riding there this past Sunday 5/03/2015 and actually saw a mountain lion walking down the back fire road at around the 7.5 mile marker. He said the lion heard him and turned broad side (where he could positively identify it as a lion) and looked at him for a few seconds and walked off into the woods.
It did not show any signs of aggression at all and just simply walked into the woods and disappeared. This does confirm that there is a big cat most likely living in the Weldon Springs area.