Board Thread:Theories and Speculation/@comment-31661816-20170403165339/@comment-31661816-20170405101109

Veejay2 wrote: What about using doton shinju zanshu since it wasn't said that the barrier went underground(to my knowledge anyway) Again, considering that the building survived powerful water jutsu and Wood Release jutsu, i think it's clear it did extend below them. It wasn't shown, but i think it's clear enough that it was. I mean, we've seen Earth Release users escape underground easily, it would be a really really weak and useless jutsu if it can't contain that. And since Orochimaru knew Hiruzen has all 7 releases....

The same argument holds for when the Edo Kage and Obito use the same barrier. Would be one heck of a weak barrier if it didn't go underground. (The exposed top is necessary since in all cases, the barrier barely held under the explosions and so by leaving the top open, the pressure can escape. Flight in Naruto is rare, digging through earth is not).

I think the four Hokage used a different barrier - FOUR RED YANG FORMATION

But,other than that you are most probably right


 * sigh*