Officials say the weekend death of a Kansas City teenager at Johnsons Shut-Ins State Park highlights dangers of the tall bluffs at this popular attraction in southeast Missouri.According to the St. Louis Post-Dispatch, Mariah Brielle Elle Schramm, 18, died Saturday from an apparent head injury after falling onto the Black River from a rocky bluff.Col. Tom Dresner is chief ranger for the Missouri State Parks. He said that people often ignore the signs marking the spot as trespassing and jump into the river. He said that tickets are issued by the park for trespassing. However, no park rangers were present in that area at Schramm's death.Park rangers were told by witnesses that Schramm appeared to be hesitant to jump. Dresner stated that she lost her footing at 3:00 p.m. on Saturday and fell onto the rocks.Dresner stated that the water is very deep and anyone can jump far enough from the bluffs to avoid hitting rocks.He said that she fell so close to it she hit her head on the rock shelf below the water's surface.