Namhan Castle - Yeonjubong Ongseong Traditional Geocache
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Namhan Castle - Yeonjubong Ongseong
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Difficulty:
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Size: 
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In general, ongseong refers to defensive wall constructed outside
main gates to protect them.
To enter main gates, one must pass ongseong. However, in Namhan
Castle that has five ongseongs,
they were designed more on offensive purpose rather than on gate
defending purpose, because they were
rather close to projected bastions from which defenders could
attack the opponents accessing the wall.
Three ongseongs are in the south wall and one is in the north and
east wall, respectively.
The reason that ongseong was mostly built in the south wall was
because this side of wall was on
the least steep slope and so not only was difficult to defend
opponents but also was the weakest point,
if the opponents occupied Beolbong Mountain (534.7 meters in
height) near the wall or fired guns from the valley.
Ongseongs were mainly constructed at weak points of the fortress,
and were connected through ammuns.
Also, at the edge of each ongseong was firearm bastion. Except
Yeonjubong ongsong,
they were constructed after the Byeongja Horan, Ching's invasion in
the year of Byeongja,
to effectively react to opponents' firearm attacks.
Additional Hints
(Decrypt)
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