Not sure if this is the best place or safety.
The story speaks for itself.
Some nut case on the loose again..
http://www.abc.net.au/news/2015-07-0...-track/6600524
Some picture of the spikes here:
Do a Google search for https://www.google.com.au/search?q=s...=1636&bih=1257
and select the image ( not sure if link works).