the plugin "Dangerous caves" has been discontinued. there is a new updated version for minecraft 1.16 which is not in the original file. i would like to request the 2nd version of dangerous caves to be added to the plugin list.
Dangerous Caves 2: https://www.spigotmc.org/resources/dangerous-caves-2-make-your-caves-scary-1-12-2-1-16-2.76212/