Hi Jeff:
While I am an active advocate of making one's own terrain mesh BGLs for the MSFS / P3D simulators, and have posted substantial amounts of information here at FSDeveloper on how to make terrain mesh using
ex: Global Mapper, on a practical basis, terrain mesh BGL files are already available in the P3D-compatible
FreeMeshX packages available for free download via online Torrent files distribution:
http://ninetwopro.com/freemeshx/
http://ninetwopro.com/freemeshx/bit-torrent-download-links/
FYI:
FreeMeshX uses the latest "cleaned" SRTM 1-Arc Second (~30 Meters) source data compiled via SDK Resample to LOD-10 (~38.2 Meters between elevation data points on the ground).
I am unaware of any 3rd party elevation source data currently available at a higher resolution for Bali, so IMHO there is no potential benefit in allocating one's time to learning the considerable amount of work-flow required to produce "proper" add-on terrain mesh BGL(s) ....that are otherwise already accessible for download and use for the area in question.
If you are interested in learning how to download only the local sub-section (rather than a huge region pack) for the Bali island area via the Torrent distribution option offered by the developers of
FreeMeshX, feel free to inquire further here.
PS: After download of the selected files from the
FreeMeshX Torrent are completed, the BGL file you are looking for is:
[FreeMeshX Global 2.0 install path]\FreeMeshX - Australia and Oceania\scenery\
S10E110.bgl (~150 MB in size)
GaryGB