(Portland, OR)  --  Officials say a ten-year-old Portland boy who was seriously injured in a fall while hiking at Silver Falls State Park is now listed in good condition.  Wilson Pelot leaned against a loose railing and fell about 50 feet down an embankment and into a shallow creek while hiking with his family Sunday.  The Llewellyn Elementary School fourth-grader is recovering at Doernbecher Children's Hospital.  A spokesman for Oregon State Parks says more prominent signage will be installed at the park to warn hikers of dangerous spots that need to be repaired.