Netherlands rooms

The hunebedden Dolmen chambers on the Hondsrug, built of boulders the ice had already dropped, with an east-west plan whose sky reading is still a spread of possibilities.
The Wassenaar grave Twelve people buried together on a low dune at Wassenaar, with an arrowhead between one man’s ribs and unhealed cuts on three others, dated from charcoal to about 1700 BC.

Offshore

Rooms in the sea off this coast. Each one is a pin on the world map once the chart is enlarged. They are gathered in the Drowned Lands wing.

Doggerland. The same North Sea plain, off the Dutch coast, where trawlers still raise bone and flint.
Drowned Lands. The wing that gathers the Ice Age shelves.