The following are changes to caves for Miami 50x are vanilla, without mods. The structures in place are indestructible, and are to be treated as an actual terrain wall, any meshing or mesh attacking is prohibited.
FJORDUR
BEE CAVE
(Coords: Lat 9.8 - Lon 84.4)
Main entrance.
Right pathway blocked, making it one entrance total. Some spots inside lowered.
VANNALAND CAVE
(Coords: Lat 35.8 - Lon 95.5)
Main entrance lowered.
Main entrance inside POV.
WATERFALL CAVE
(Coords: Lat 77 - Lon 36.5)
Main entrance.
Second entrance blocked, other one lowered.
PEARL CAVE
(Coords: Lat 47.2 - Lon 42.5)
Main entrance lowered.
Main entrance inside POV.
VANNALAND CAVE 2
(COORDS: LAT 28.8 - LON 39.8)
Main entrance lowered.
Further entrance inside lowered.
ARTIFACT HUNTER CAVE
(COORDS: LAT 7.6 - LON 39.1)
Main entrance.
Second entrance blocked.
VARDILAND CAVE
(COORDS: LAT 77.8 - LON 29.2)
Main entrance lowered.
Main entrance inside POV.
FORBURG CAVE
(COORDS: LAT 31.9 - LON 65.9)
Main entrance.
Main entrance inside lowered.
LINBJORD FOREST CAVE
(COORDS: LAT 13 - LON 49.9)
Main entrance lowered.
Main entrance inside POV.
THE SHIMMERING HALLS
(COORDS: LAT 11.8 - LON 62.6)
Main entrance lowered.
Deeper main entrance lowered.
BJARGFOSS CAVE
(COORDS: LAT 60.8 - LON 79.9)
Main entrance lowered (inside pov)
Second entrance blocked.