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Post by fots2 on Jan 22, 2016 22:25:31 GMT 8
Good day xray,
Those “black & white pie stickers” are quite modern. I don’t know the exact name for them but they are cardboard markers used by the company that produced the 3D digital survey of the tunnel. Look a few posts up for a video of their work.
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Post by xray on Jan 23, 2016 0:09:11 GMT 8
Yes, I figured they were recent additions.
Quite amazing that such a large and complex construction project done within [more or less] actual living memory can have so little info available, I guess a sign of the amazing, tragic times it was built. Interesting that Fertig was involved as well, stands to reason since engineering was his game before the war.
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Post by fots2 on Jan 23, 2016 0:40:30 GMT 8
I agree xray, I have no doubt that Fertig and even the earlier tunnel constructors had other records produced but it seems they may be lost forever. No additional records have been discovered in recent years that I am aware of. By the way, I have some sketchy information of the existence of other tunnels in the area but not really enough to go searching. I am not giving up yet.
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Post by Karl Welteke on Jan 25, 2016 9:42:23 GMT 8
ANOTHER TUNNEL UNDER FORT BONIFACIO, THE EX FORT McKINLEY Fots2 said this on 23rd Jan.2016 on page 3 in this thread: By the way, I have some sketchy information of the existence of other tunnels in the area but not really enough to go searching. I am not giving up yet. Karl says: Indeed there is at least one more substantial tunnel under the former Fort McKinley. Well known Manila personalities and a guest or two explored it on the 13th Nov. 2012 and I uploaded some pictures in the below thread (scroll down a little): corregidor.proboards.com/thread/1305/tunnels-fort-2?page=1And I also posted all 54 pictures in this album: app.photobucket.com/u/PI-Sailor/a/23990663-97ff-4bd7-8d4c-41aa72a33d72?field=TITLE&desc=ascClick on the icon “i” to read the image description! Here are two sample images: W598 the Tunnel Rats are discussing things in the entrance way to the ex Fort McKinley Tunnel. W599this is the graph of the other tunnel under the ex Ft. McKinley This is a list of URLs, I know of, that are dealing with the Fort Bonifacio (ex Fort McKinley) tunnels: Fort Bonifacio Tunnels The Fort Bonifacio Tunnel, from fots2 as a trip report, 5 pages now: corregidor.proboards.com/thread/1260/fort-bonifacio-tunnelHistoric Fort Bonifacio tunnel converted into a septic tank, from EXO corregidor.proboards.com/thread/1641/historic-bonifacio-tunnel-converted-septicFort Bonifacio Tunnel Visit, from armyjunk, gives the same link as the direct CDSG link below. corregidor.proboards.com/thread/1622/fort-bonifacio-tunnel-visitTunnels under the Fort from Karl, 2 pages now, the first page features the other tunnel under Fort Bonifacio: corregidor.proboards.com/thread/1305/tunnels-fort-2?page=1Album of the other tunnel under Fort Bonifacio with 54 images: app.photobucket.com/u/PI-Sailor/a/23990663-97ff-4bd7-8d4c-41aa72a33d72?field=TITLE&desc=asc Click on the icon “i” to read the image description! The Coastal Defense Study Group has a image page about the Fort Bonifacio Tunnel: cdsg.org/forums/viewtopic.php?p=1514#1514 But it has a link that is dead now! An album of: FORT BONIFACIO TUNNEL VISITED BY THE TUNNEL RATS 2012 JULY 24TH app.photobucket.com/u/PI-Sailor/a/49d7b6b7-1b5f-45dc-8942-cb05e8ff00d2?field=TITLE&desc=ascClick on the icon “i” to read the image description! AFP welcomes plan to make Fort Bonifacio (Fort McKinley) tunnel a heritage site corregidor.proboards.com/thread/1132/fort-bonifacio-tunnelA group of Filipinos, called the Tunnel Rats, historians and armchair historians arranged with the Philippine Army History Department and the Management of Bonifacio Global City (BGC) access to the former ex Ft. McKinley tunnels. BGC also provided logistic support. These images are from Businessman Leo D. Dominguez who shot these pictures with his camera. Since someone else took these pictures; I’m on a few of those images. Leo gave me permission to use the images in this forum and I established an album with 29 images: app.photobucket.com/u/PI-Sailor/a/c552ed7b-8f4b-4453-b4b2-45c097ed1998?field=TITLE&desc=ascClick on the icon “i” to read the image description!
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Post by Karl Welteke on Aug 31, 2023 18:13:32 GMT 8
The Fort Bonifacio Tunnel pages are Up-dated!!!!!!!!!!!! This Corregidor Forum Page got started by John Moffitt, he put a lot of effort in this project, 5 pages now. It is the best research work on this tunnel anywhere, built under the former Fort McKinley. After the war it was turned over to the Philippine Army and the tunnel is now mostly referred to as the Fort Bonifacio Tunnel. Fort Bonifacio is gone and the Bonifacio Global City was established and they have custody of the tunnel now! This is the URL: corregidor.proboards.com/thread/1260/fort-bonifacio-tunnelMany of us Corregidor admires have started using Photobucket to post the pictures. They changed their policy from doing it free to a high price. So, all the pictures then received a large and ugly watermark and it became unpleasant to view the pictures! In the last few days, the pictures were reposted from another source, all, about 160+ images. It is now a pleasure to admire the images of this great piece of history under the Bonifacio Global City. You will admire the great work of those tunnel explores. To awaken your interest and pleasure 5 images are reposted. Z089. John wading thru water, Photo courtesy of armyjunk. Since high water levels in the tunnel resulted in unfinished business, a 3rd trip was necessary. In preparation for this I bought a good pair of rubber chest waders. The first two trips were in February when the climate in the Philippines is comfortable. It was still hot down there but not overly so. By the time trip #3 happened, it was April and the really hot time of the year had arrived. Manila temperature that day was 34.4C (94F). With humidity factored in it was over 40C (104F). In some areas of the tunnel, humidity was so high you could see it like a fog. My flashlight was like a Lightsaber cutting through the mist. Even the camera lens and my eyeglasses fogged up on occasion. Z090. Two paces forward and here are the 57 steps down to the main tunnel. The rope at the left is probably a life saver. Z091. Viewed from the opposite side, the tapering wall is very obvious and the original straight tunnel still exists. Also, note that this area has another “T” intersection. It leads to sections of tunnel which do not appear on the 1941 blueprint. From here we will continue on toward the Amapola St. entrance. This part of the tunnel is long and straight with the only points of interest along the way being two laterals and one big notch into the rock. Z092. In June, 2012 this is what the entrance looked like. Since then, government officials in Pembo have been working towards opening the tunnel as a tourist attraction. The entrance has been cleared of garbage, silt and vegetation. New concrete makes the entrance safe and presentable plus a permanent gate will soon be added. As of now no date for allowing the general public to enter the tunnel has been finalized. Z093. Fort Bonifacio Tunnel Sketch The 1941 documents are interesting in that they detail work to be undertaken but what is disappointing is how inaccurate the associated blueprint turned out to be. Usually official Army documents are our best source of information. I have not verified all the details on the 1990s sketch but it is by far the most accurate drawing of the tunnel system that we have. It is not just a matter of the 1990s sketch being more detailed; the blueprint shows rooms and laterals that do not exist. Apparently what the Army built differed from their original plans plus there is also talk that the tunnel was enlarged during the Japanese occupation. The only complaint I have about this sketch is that some proportions are not accurate. (i.e. the length of a lateral when compared to one beside it is not correct in some cases. The general shape is very good though). An exact “as built” plan of the tunnel may not exist and it appears that no one has bothered to create detailed records of what remains today.
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