group sex with double penetration by huge cocks into a girl's anus and vagina, the girl visually experiences intense pleasure, masterpiece, best quality, highres, photorealistic, cinematic lighting, 1girl, 18 y.o., Katrín Haldorsdóttir, long platinum blonde hair soaked and hanging down, pale ice blue eyes half-closed in visible ecstasy, Icelandic, flushed pale skin glistening with cold moisture, tall slim athletic body fully nude, positioned on all fours with elbows resting on wet basalt rock and hips lifted high, prolapsed overstretched anus and vaginal opening both visibly gaping from deep double penetration, thick transparent fluids visibly flowing directly from both holes, thighs trembling under pressure, nipples erect and clamped, compass pendant resting above swaying breasts, facial muscles tense in visual orgasm, mouth open and breathing freely, wrists tied to rock crevices with climbing rope, feet braced on mossy stone, powerful Icelandic waterfall thundering behind with cold spray misting the scene, HDR, ultra-detailed anatomy and skin, sharp contrast lighting over wet surface, cold extreme erotic wilderness, double penetration, green, eyes, blue, brown, perfecteyes, <lora:SDXLHighDetail_v6-000005:.5>, <lora:PerfectEyesXL:1.1>, <lora:765092_training_data:1.1>, <lora:287645_training_data:.8>