Pha Nok Aen

Pha Nok Aen is a prominent cliff viewpoint on the eastern rim of Phu Kradueng mountain in Phu Kradueng National Park, Loei Province. Located about 2 km from the park's visitor center on the summit plateau, it is renowned as the park's best sunrise viewpoint. The cliff overlooks a vast sea of mist and forested plains below and is a central stop on the summit nature trail circuit.

Visitors can expect a dramatic sandstone cliff edge on the Phu Kradueng plateau at approximately 1,300 meters elevation, facing east. The area offers open panoramic views over the lowlands of Loei and Khon Kaen, especially at sunrise when sea of mist is common in cool season. The viewpoint is accessed via flat to gently undulating forest trails from the summit campsite, with a cleared viewing area, safety railings and interpretive signs. Surroundings are pine forest and open grassland typical of the summit plateau.

Phu Kradueng was declared Thailand's second national park on 23 November 1962. Pha Nok Aen has long been the traditional sunrise viewing point for hikers who pioneered the summit trail and remains the most visited viewpoint on the plateau's eastern escarpment.

The viewpoint is culturally significant as a landmark of Phu Kradueng, a mountain revered locally and popularly associated with nature appreciation and trekking culture in Thailand. Sunrise viewing at Pha Nok Aen is a customary ritual for overnight visitors staying on the summit.