please pardon my probably stupid question (and any mistakes, I'm not an english native-speaker!), I'm absolutely new to letterboxing...
That is, I found my first 3 Boxes quite incidentally 2 years ago, when we spend our honeymoon in a very rainy Dartmoor ... and now I want more stamps, more, MORE!

Which isn't that easy because I'm from Germany and unfortunately cannot spent as much time in dartmoor as I'd like to... But I read so much 'bout letterboxing & Dartmoor & Country Code (...), now I HAVE TO come back again!
So (coming to the point at last) I had the idea to come over for a short break again, park my car anywhere and walk right into the moor - and camp there for a night or 2. The other night(s) I intend to stay on a campsite or hostel.
Can anyone maybe give me some tipps where to park? I mean - I don't feel 'safe' about letting my good old car alone on a deserted car park ...
Is it possible to leave the car somewhere secure?
Thanks for any answers!
Wolfram
from Münster/Germany