Camp Livingston Louisiana

Found this on the geocaching site.

this structure was for tram engine storage. if you look north the old track bed is still visible. there are five more bunkers along its path. i,m told these were for target storage and replacement.there is also some earthworks nearby i don,t understand. this system makes a circle to come back to its starting point.this is unlike the bunkers on southside fr167 that snake more than mile to a dead end.