In saving Pvt Ryan during the Normandy scene there are bunkers on the cliff. Did bunker like that really exist?

by The_AmishElectrician

I've tried and googled for picks of those types of bunkers along the cliff and I've only found one that looks almost remotely close but not exactly like them. what types of fortifications did they axis powers have along the beaches in terms of bunkers, tank traps, ect..

The_AmishElectrician

Also, how dug in were the Germans during the D-Day landings, did they have armories and bunkers suited for living conditions?