A swim through a Finnish pond
The areas that were covered with thick ice sheets in the ice ages
that ended some 12,000 years ago are covered with lakes and ponds of
many sizes, many of which are a beautiful blue or green colour, though
in the case of spotted lake (see http://bit.ly/29kJQzp) something more surreal can result. Loz.
Image credit: Audionautix http://bit.ly/29xKHcs