page_title: Single-vault station
hierarchical_section_title: Single-vault station
caption_attribution_description: Foggy Bottom station platform from the mezzanine.
context_page_description: The single-vault deep underground station is a type of subway station.
context_section_description: The single-vault deep underground station is a type of subway station.
caption: Foggy Bottom-GWU station, Washington Metro
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