Semigallian Castle Mounds
Elku Hill used to be a Latvian sanctuary – the central cult site of Zemgalians.
The picturesque castle ruins by Bērze River are still impressive.
The mountain not visible as mound-shaped could be used as a place of refuge.
The 2 km peaks of hillocks of Dobe hills form the castle mound of Mežakalns and Incēni, they are separated by the glen of the river Avīkne and the road from Kokmuiža to Lielauce.
The castle mound of Spārni is situated on picturesque southeastern banks of the lake Spārni near the outlet of the river Sesava.