Dragon Head, Metro Survive Recommendations
Dragon Head was in its element when, following an earthquake, three people found themselves trapped underground after their train derailed, surrounded by corpses.
Where as DH's characters don't stay underground for more than a few volumes, Metro Survive's tale of survival starts and finishes with its character underground. The two are different, as a result, but to begin with the feelings of claustrophobia and panic expressed make it easy to link the titles.
(FYI, DH goes to shit after its early earthquake/train drama.)
The two manga start off the same, a "sub-normal" hero getting trapped into a closed space with trains by an earthquake.
Then, there's nothing, no more radios, no more contact with exterior, and the people trapped underground must find a way to survive.
Dragon Head is way longer, so there's a lot more to its story than just this "trapped underground" thing, but you'll probably be hooked before it's even finished, because the situations are very similar at first, and the tension is always high, for maybe different reasons in the two works, but I think they're both enjoyable for the same reasons - the same feeling