History: 1st Cavalry Division soldiers explore a tunnel west of Duc Pho in April 1967 [750x598]

https://i.redd.it/obvankjzxo411.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/8rwwiy/1st_cavalry_division_soldiers_explore_a_tunnel/?utm_source=ifttt