@tom_laoshi: Núi Mắt Thần blends into this magical valley in Cao Bằng, where a giant round hole cuts straight through the mountain like an actual eye 👁️✨ • Locals call it Núi Thủng – “the pierced mountain” • It’s over 400 million years old • Part of the UNESCO-listed Non Nước Cao Bằng Geopark 🌍 #caobang #godseye #heavensgate #dulichvietnam #flycamvietnam