In Leiden today

I saw two very interesting exhibitions in one museum. The first one about neolithic temples from about 4000 BC. Scale models were on display as well as find. I've been to Malta, many years ago. I remember having been to such a place, but can't remember if I saw any more of them. I really should go back. 

The second one was about Doggerland, the land that once was between North Europe, Scandinavia and the UK. And which got flooded after the last Ice Age, when all the ice melted. Very interesting! Makes you wonder about our future...