I have recently become fascinated by this landscaping feature.
It typically consists of a sudden sharp slope that meets with a vertical rise.
There is a road near Woolwich called "Ha Ha Road" and there are the remnants of the original ha ha nearby apparently. I wonder if it got its name from the results of hapless individuals stumbling into one. I also wonder how many there are in this country and if there is one near me (I live in SW London).
Any thoughts ?
In its modern form, the concept and term are of French origin, with the term being attested in toponyms in New France from 1686 (as seen in modern times in Saint-Louis-du-Ha! Ha!),
I think nungate's right - the idea was to keep the cattle from peering into your stately home, but without the use of a visually unappealing barrier like a fence. A sunken ditch was out of your sight but deterred the wildlife.
They have a breed of white cattle up at Lennoxlove that can be quite nasty -
I don't remember all the details though but I think they are quite an ancient breed - it's been a while since I was there
There's one at Glamis Castle in Angus that has 'listed building' status, and a superb example at Hopetoun House by South Queensferry - (second picture)...
Dotty - I think there might be one, or the largish remnants of one, at Levens Hall....but I suppose being Carnforth way that counts as Cumbria not Lancashire.