a carved part of a mountain

[keannu]

Source : Self practice
The Daewoong Management Development Institute is where I work.
It is situated in a carved part of a mountain. It provides various training programs in a beautiful natural environment.
For example, recreation facilities, BBQ spots, cafés and sports facilities are equipped in there.

If any of the underlined is awkward, please let me know.

 

[Tarheel]

Perhaps:

I work at the Daewoong Management Development Institute. Carved out of a mountain, it provides various training programs in a beautiful natural environment. Also, recreation facilities, BBQ spots, cafes, and sports facilities can be found there.