八公山   팔공산
One of Korea's greatest sacred mountains
and a Provincial Park
surrounded by Great Temples
Still  Under  Construction
From my Encyclopedia of Korean Buddhism:

Palgong-san  [八公山 팔공산, Eight Worthies Mountain] has been one of Korea's most sacred
mountain-clusters since ancient times, and is today a heavily-visited attraction located on the border
between Daegu Metropolitan City and Gyeongsangbuk-do Province, including parts of Chilgok-gun
County, Gunwi-gun County, Yeongcheon City and Gyeongsan City.  Most of it is now the Palgong-san
Provincial Park of Gyeongsangbuk-do, designated in 1980.  It is the nation’s largest provincial park,
bigger than many of the national parks. Its waters feed the Nakdong-gang and Geumho-gang rivers.

Palgong-san has long served as both the military and spiritual "guardian" mountain of this central
region, with several sites of former military fortresses on its slopes.  It was the central holy peak
Jung-ak) of the O-ak [五嶽, Five Guardian Mountains] system of the ancient Shilla Kingdom and
Unified Shilla Dynasty, and remained prominent in the Goryeo Dynasty.  Their kings sponsored ritual
ceremonies venerating its presumed-powerful Sanshin [山神, Mountain-spirit] for national prosperity
and protection every 3rd and 9th Moon, at shrines on its summit and at its southern foot; one of
these has now been revived in the traditional royal-Confucian style by the local governments.  This
vast mountain holds an important position in what we might call the "sacred geography of Korea",
and has always been a key center of Korean Buddhism, hosting about two dozen temples.

The summit, 1192 meters above sea level, is the central
Biro-bong [飛蘆峰, Vairocana Peak] named
Birojana-bul [毘盧遮那佛, Vairocana the Buddha of Cosmic Light], previously named Jewang-
(帝王峰) after the Jeseok-cheon [帝釋天, Heaven-King deity, Indra].  Its 993-m eastern peak
(popularly called
dong-bong) is named Mita-bong (彌陀峰) after Amita-bul [阿彌陀佛, Amitabha the
Buddha of Western Paradise], while its 902-m western massif (
seo-bong) is named Samseong-bong
[三聖峰, Three Saints Peak] or
Ga-san.  These three main peaks have long been thought to be
representing a set of Three Buddhas (past, present and future), or a
Samjonbul (三尊佛) triad.  
pungsu-jiri (風水地理, feng-shui, geomancy) experts have long said that Biro-bong looks
like “a phoenix roosting on her eggs”, a highly auspicious form.

Palgong-san is a great national treasure, holding a vast natural, cultural and spiritual wealth, featuring
magnificent granite formations atop its ridges offering spectacular views, beautiful valleys and thick
forests.  Its five greatest ancient Buddhist temples are Eunhae-sa (銀海寺, Silver Sea Temple) on the
east, Donghwa-sa (桐華寺, Bright Paulownia-Tree Temple), Buin-sa and Pagye-sa on the south,
and Songlim-sa to the southwest.  It also hosts Seonbon-sa Temple (禪本寺) on Gwan-bong Peak
(冠峯, south of Mita-bong), which features the famous
Gat-bawi [갓바위, Hat Boulder] Buddha Statue.
The Gunwi County Triad Buddha Grotto (National Treasure #109), commonly called the
[Second Seokgul-am 石窟庵 grotto-shrine], is on the remote northern slopes.

In addition, there is a large stone
Mireuk-bul [彌勒佛, Maitreya the Future Buddha] triad at Yeombul-
[念佛峰, Buddhist Chanting Peak] near the summit, and the 20-km-long walls of Gasan-san-
seong Fortress in the west where a great battle was fought between Hubaekje and Goryeo forces
in 927.  Quite a few other traditional and modern temples and hermitages also encircle these slopes.
It is said that Palgong-san temples enshrine an unusually high number of Yaksa-yeorae-bul
來佛, Bhaisajyaguru the Medicinal/Healing Buddha] statues, besides the many Mireuk-bul icons.

called'Youngsan' (靈山) in Daegu Gyeongbuk.