It is my understanding that parts of the Fuhrerbunker and Malinta Tunnel lie buried still, and have never been excavated. I fully understand why the Germans and Filipinos have forbidden exploration of these sites. No one wants to glorify Hitler and Tojo. For those who lived through the war, these places surely bring back a lot of unpleasant memories.
But the history buff in me kind of wishes that these places could be excavated. I don't believe they should be turned into shrines for modern day fascists or tourist destinations. But I watch "Cities of the Underworld" on the History Channel pretty often, and it makes me think about some of the places that have yet to be unearthed.
Maybe a small group of archaeologists and historians, specialists in World War Two, could be allowed in, to film and document what they find there.
As I understand, there is actually quite a large section of the Malinta Tunnel that has never been excavated. In the final battles of 1945 around a thousand Japanese troops, knowing they couldn't fight their way out, detonated explosives, sealing themselves in.
You would think that the Japanese would want to recover the remains of their soldiers, to be returned to Japan for a decent burial. I don't know how much identification World War Two Japanese soldiers carried, but it might even be possible to identify these men, and bring closure to their children and grandchildren.

there was a show I saw just last week about that very subject. i think it was on the National Geographic channel. a specially created crew including a guy who actually served in it did a virtual recreation of the inside. another guy was an architect who was driving by and heard explosions. he stopped to see what was up and spoke to a security guard who told him what was going on. it turned out the East Germans were dynamiting and destroying what was left of it before the Berlin Wall fell. he asked a guard if he could make some sketches and the guard allowed him to return after everyone else had left. apparently the East Germans/Russians did their best to destroy it after WWII after they went thru it all and photographed it. some of those pictures were also recovered after the wall fell. the team used scientific instruments to locate the walls and laid out the floorplans on the ground above. with some photos that were found and all the other information the virtual layout was created. today it's under a park in front of an apartment complex.

there is a small memorial going on the site commemorating victims of the Holocaust but there were fears that it would become a shrine for the neo-nazis if anything was done to restore it or reopen it for any reason. I often wonder what it would be like for Germany and the Germans to be able to approach their history without the shadow of the neo-nazi movement that just won't go away..

It must be an awful thing for Germans, to be forbidden to feel any pride in your country and its history because of WW2. I took a German Civilization course in college and to my dismay practically the entire course focused on the Third Reich, as if all of German history before and after WW2 was a mere footnote.
Certain other countries behaved almost as badly as the Germans in that war, and some of them don't seem to have ever acknowledged that they did anything wrong, or that their former regimes and ideologies were evil.
My apologies! This is supposed to be about history, not the present day.
Anyway, my dad fought in the battle to retake the Philippines. As you know the Japanese garrison there didn't give up until their homeland did. I'd love to go there someday, and see the places where he served. There is a plaque honoring his 32nd Division at the Villa Verde Trail. I'd like to visit the Malinta Tunnel too, although he didn't take part in the fight to retake that place.