I was clearing a trail called "Clag-be-gone" yesterday and I moved a rock and found one of these:
It was beautiful but I didn't spot it at first and when it moved I got the fright of my life. I've seen loads of smaller green geko types under rocks, some fairly big scorpions and even a huge centipede, well over 10cm's and evil looking, I've since found out it's a Scolopendra and can grow to 20cm's in Europe. It was actually beautiful and scary the way it moved, quite like that bad guy out of Monsters Inc but it's meant to give a very nasty bite. I won't post a picture for the faint of heart but google it if you're interested.
I also found some very large beetles last week in some dead wood, about the size of a thumb and the most amazing irredescent metalic green, absolutely beautiful.
Anyone else found anything cool / creepy under a rock when building biking trails.