grimdark setting, dark fantasy, sunny morning, (huge ancient stone dimensional portal:1.6), the air in the center of the portal waves and trembles, thick ancient forest, huge massive trees, (the sun's rays illuminate the forest:1.2),  stream, (mist:0.2), glowing particles of ice, dense aura of cold, (covered with ice:0.6), ornamented details, volumetric light, natural light, detailed background