the 15-metre-high Jurakalns lookout tower is actually named after the Jurassic geological period. From its height, you can see the Venta Regional Park, the Venta River valley, the Jurakalns geological outcrop and the Papilē hillforts.

If Jurakalnis sounds familiar, congratulations – you know your dinosaurs!
In fact, the 15-metre-high Jurakalnis lookout tower is named after the Jurassic geological period. From its height, you can see the Venta Regional Park, the Venta River valley, the Jurakalns geological outcrop and the Papilė hillforts. Jurassic layers have been discovered at the site and various fossils can be found here today.

Info from lithuania.travel website