Does anybody remember 'Forest Rangers', set in Canada I think? Can't remember much about it except the they lived/played in a fort or something, and had a friendly native to look after them. The number one kid always looked underfed.

And, and, and what about 'Tales of Rubovia'?

And I could never work out when I was a kid, why the actors faces didn't look quite right when they were saying their lines in all those 60's kids programmes - it was ages before I twigged they were all speaking Bulgarian or something. And wasn't the theme tune to Robinson Crusoe great - I can hear it now!