beirutvet and oozlefinch,
There is a lot of dirt in these tunnels however there is no roof collapse. This creates a mystery for sure. (okla will love this
). Both rear entrances are collapsed and look untouched as far as digging goes.
Just past the 1:30 mark in the video you do see a side lateral on the right. It does not go far so I did not spend extra time looking at it. Here, the original concrete wall has been broken through and solid rock chipped away for about two feet or so. A smaller diameter section continues a bit further but is full of broken rock so you cannot see how far it goes. In this direction is the SE side of the ridge (named Wheeler Point) in which Battery Monja lies under. The South Shore Road went by there. I see no season for Americans or Filipinos to do this so I assume the Japanese dug here for some reason. Perhaps it was the holdouts keeping busy until they gave up in 1946.
It is not possible that digging in this small lateral accounts for all the dirt in the main tunnels, it came from elsewhere. I can’t imagine any of it resulting from erosion either. The dirt is not densely packed and the tunnel has the appearance of never being flooded or even very wet. A lot of it looks more like soil than crushed rock.
So where did the dirt come from? Oozlefinch’s guess for this is as good as any and he actually provides two clues that I was not aware of. He says that when he was there in ’87, (1) the gun well was nearly full of dirt and (2) there were no inside mounds. Since the opening from the gun well out to the cliff is open now and mounds of dirt are inside, this gives me a little SWAG of my own. I can imagine illegal scrappers/treasure hunters digging inside the battery at the gun well sometime after 1987. Dumping the dirt outside and down the cliff face would make it obvious that they were working there (visible from fishing boats etc) so the dirt was distributed along the floor inside the tunnels. This location is very remote on Corregidor so they could dig to their heart’s content without any interruption. By the way, EXO is correct about the scrapping. The nearby shelter for Searchlight #4 has been stripped of rebar.
The original cause of the opening at the gun well (i.e. the Casemate entrance) being filled with dirt could have been shelling from off-shore ships in 1945 that brought down part of the hill or more likely, later landslides.
Now about the tunnel under the battery; yes it exists and it does connect up into the battery at the bottom of the gun well. The entrance is directly below the Casemate entrance and actually hidden from view. You could easily miss it if you did not know it was down there.
This is an unlined tunnel cut into the solid rock. Upon entering the tunnel you see a “T” intersection. If you go right, the floor soon drops a bit and the tunnel becomes very narrow. It is eventually dead-ended. If you go left the tunnel is straight. It ends in a good sized room which is large enough to stand up in.
Along the left-side tunnel is a hole in the corner ceiling where this tunnel connects up into the bottom of the gun well. A skinny Japanese soldier could get up there with no problem where my fat a** requires some effort to do so. Coming down is much easier obviously but there is no point in doing this. Go from the battery to the tunnel via the outside cliff entrances, it can be done safely.
Battery Monja is a unique place and few people make the effort to get there. It has lots of unusual things. For example, in the video notice the big hole in the concrete floor at the entrance to the two magazines. There are others too. Even with a boat dropping you off at a nearby beach, Battery Monja is not an easy place to get to. It is quite a steep climb, vegetation can be thick and it is always hot up there as it gets direct sunlight all day long. Take lots of time and lots of water. Karl brought a rope once and that helped a lot. I would like to go there again someday.
Hey Oozlefinch, do you have any old slides you could scan to show us what you saw in 1987?
Sorry but I cannot answer your question about what happened to the original 155mm gun in the casemate, I wish I knew. A February 1945 photo shows that most of the Casemate concrete to be gone at that time, perhaps the gun too.
I will respond to the Searchlight #8 and panorama questions later.
Pre-war view of Battery Monja Gun #1 in it’s Casemate.
Another pre-war view.
February 1945 view of Wheeler Point taken offshore from a PT boat.
Battery Monja Casemate entrance today.
Looking back out the entrance.
At the rear of the gun well is the start of the tunnel. Notice that the concrete floor has been broken away.
At the rear of the Casemate we can see below the gun well through the broken floor. This leads to where we can get down to the lower tunnel.
Here is a good view of the little side tunnel seen in the video just past the 1:30 mark. It looks like a hand-dug tunnel that has collapsed.
At a tunnel intersection notice the dirt piled up against one wall and a clear footpath on the right.
Looking down at the lower tunnel entrance.
Rock slides have nearly sealed the entrance.
Inside the tunnel at the “T” intersection with the entrance is to the right.
Past the rock pile the floor slopes downward and the tunnel narrows.
The end of the right-side tunnel has been wet. Could this lower section of tunnel have been a cistern to hold drinking water for the holdouts? I can only guess.
The view near the end of the left-side tunnel.
The floor in the end room has been wet in the past too.
The hole in the corner ceiling up to the Battery Monja gun well.
Beside/under the gun well this area is about 2 to 2 ½ feet high. Crawl along here and go up through the broken floor to the right.
Here is what EXO is talking about. Not far from Battery Monja is the shelter for Searchlight #4. Rebar has been stripped from the walls and ceiling.
The view from near Battery Monja looking west towards Bataan.
Wheeler Point today.