hike this weekend in the madrid sierra

If you want to escape the concrete jungle of madrid, look no further. We are a small walking group who meet every weekend, for a walk of about 16km more or less. 
meeting place is usually outside metro station plaza castilla at 10.30am(water tower exit)
if interested, contact...
chris..daichead@yahoo.co.uk(english)
juan pablo.cryton42@yahoo.es(spanish)