In uk.transport.london message ,
Mon, 23 May 2016 00:26:07, Richard J.
posted:

Whitestone Pond on Hampstead Heath may have been the highest point in
the old LCC area (though actually I think there is a higher point off
Spaniards Road a little to the north-east of the pond).

ISTM that if a pond were the highest natural point in an area, it would
soon go somewhere else.

--
(c) John Stockton, Surrey, UK. Turnpike v6.05 MIME.
Merlyn Web Site - FAQish topics, acronyms, & links.