Morbidness (1972)

Immediately following their wedding, young newlyweds Diego (Víctor Manuel) and Alicia (Ana Belén) hit the road with their camper in search of some adventure and fun. Feeling liberated and free, she even strips off her wedding gown down to a mesh bikini. They drive along and finally pull off the main highway onto a dirt road, ignoring a "No Trespassing" sign. Going deep into the woods, they finally pull over in an empty field and decide to camp there for a few days. They gorge themselves on food and wine, have sex. But the honeymoon doesn't last forever as they say - though usually newlywed bliss lasts longer than a day.