Sometimes you just need to jump

Mary Ellen spotted this deer bounding up the hill at Millennium Park yesterday, sign be damned.

The reason for the sign: Millennium Park is actually a giant trash heap covered with clay, a thin plastic lining and some dirt and grass, with the odd tree planted here and there. Officials try to discourage people from climbing up the hill and wearing away the dirt and then the liner that keeps rainwater from leaching God knows what into the Charles River. Deer, of course, pay no attention to such signs.