the Bukhan-san 북한산 Sub-Range
the Guardians of Seoul, North of the Han River
The term "Bukhan-san" indicates the large cluster of prominent peaks directly to the north of Seoul's downtown.
There is no single mountain with that name!   
It seems that Samgak-san was first casually referred to as "Bukhan-san" in the reign of Joseon King Sukjong
1674-1720, as the mountain-fortress in its center was renovated/upgraded and named as the "
Bukhan-
sanseong
".  It seems that the Japanese colonialists first officially designated Samgak-san on maps as
"Bukhan-san" in ignorance of Korean traditions.  Ever since the ROK national government designated Samgak-
san and Dobong-san together as the "Bukhan-san National Park", this mistaken labeling has become common
and even seems to be increasing.  The three highest peaks of Mt. Samgak, or one of them, are often labeled "Mt.
Bukhan" (or the older spelling Pukhan) on some maps.  This should be corrected -- the name "Bukhan-
san" actually designates the entire sub-range of mountains that dominate Seoul City north of the Han River.

They form the effective end of a range of mountains called the Hanbuk-jeongmaek that branches off from the
Taebaek / Baekdu-daegan Range at Chuga Ridge and Baekam-san up in North Korea, goes south and then
southwest until it approaches the Yellow Sea north of the Han River.  A set of ten major mountains and many
significant subsidiary hills, peaks and crags, the Bukhan Mountains were and are the spiritual and physical
guardians of historic Seoul, capital of Korea since 1392 CE.  The Seoul City Wall built then still runs from
Nam-san up over Inwang-san to Samgak-san, cumulating in a gigantic fortress with massive gates (some sections
of the wall, including most of the eastern parts, no longer exist).    
Refer to this map:
1. An-san, with Bongwon-sa

2. Inwang-san, with Seon-bawi and Guksa-dang

3. Bugak-san, the North Peak, above Gyeongbok Palace
                         its long south-eastern ridge is
Nak-san

4. Hyeongjae-bong Peak of Samgak-san,
with many small temples

5. Samgak-san Southern Peaks  or "Front Range"
with many  temples - Hwagye-sa, Ilseon-sa, Seungga-sa etc

6. Samgak-san (main peaks), with Doseon-sa
and many other temples

7. Dobong-san, with Mangwol-sa, Cheonchuk-sa
and many other temples

8. Sapae-san, with Hoeryong-sa and others

9.  Surak-san, with Heungguk-sa & many others

10. Bulam-san, with Bulam-sa and other temples

11. Acha-san / Yongma-san, with a few temples

12. Seoul Nam-san, with Tower, Waryong-myo,
Minsok-chon & many others

13. the Sadong-san,  the Four Eastern Ridge-Hills
                                         including the
Nak-san ridge
significant parts of Bukhan-san as seen from Gwanak-san to the south
The Bukhan Mountains form an oval-shape circuit with a few significant gaps in it -- the mightiest mountains are in
a half-circle to the north of central and eastern Seoul (with a gap that leads up to Uijeonbu City), and some lesser
peaks scattered in a southern loop just above the river.  There are a few other non-important small mountains not
indicated here.   The Buddhist temples, Confucian shrines, Shamanic shrines, historical sites and hiking trails found
on the slopes of the Bukhan Mountains are almost innumerable.  On the pages linked to this one, I have focused
on the Mountain-spirit Shrines [
Sanshin-gak] of the most significant ones -- information can be found on other sites.

Considered collectively, the Bukhan Mountains count as
one of the
Top-12 Most-Sacred Mountains of South Korea.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12
Inwang-san
Bugak-san
Samgak-san
Dobong-san
Nam-san
Surak-san
Bulam-san
Han River
Han River
An-san
Dongjak-san
downtown
Nam-san
Acha
-san
13.
Historical note that the correct name of the
central mountain of the Bukhan-subrange is
actually Samgak-san, from a tourist map put
out by Gangbuk-gu District in 2004.
Detail sections of the 1861 Daedong-yeoji-do Map by "Gosanja"
Kim Jeong-ho, showing the mountain-ranges north of Seoul
Signature-gathering Campaign advocating
restoration of Samgak-san's traditional
name, urging the national and Seoul
governments to stop using "Bukhan-san"
for it, with my friend Mr. Cho from
Gangbuk-gu District Office, in April 2007.
Panorama of the north-central mountains of the Bukhan-subrange shot from Nam-san to the south
by Robert Koehler -- blogger of The Marmot's Hole (used by permission)
Modern labels on an 18th-Cen  pungsu-jiri  Map of Seoul