Best areas in vicinity of the Hague for large dog?

Hi -
   I may be taking a job in the Hague, coming from British Columbia, Canada.  My 65kg dog and I are accustomed to walking out the door into the forest and mountains... I know I won't find THAT precisely, but it would be nice to be close to open space.  Any ideas or suggestions would be appreciated.  Thanks.

Hi patricegs and welcome to Expat.com!

Hope that you'll soon be enlightened.;)

Harmonie.

Thanks, Harmonie... I hope so too!  I appreciate your welcome message.  Heartwarming in a sea of unfamiliarity.  :-)
--- patrice.