Stalker (1979)

In a bleak, unnamed country lies the Zone, an enigmatic territory where the laws of nature bend unpredictably. A mysterious guide known as the Stalker leads two clients, a Writer and a Professor, through this perilous landscape to a mythical place called the Room. It's rumored that the Room grants deepest desires, but entering the Zone is forbidden, guarded by military and rife with deadly traps.