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Broadway Underground, Mammoth Cave National Park

a large cave room lit up to show a boardwalk running through the middle of it with a group of people walking along it in Mammoth Cave National Park
National Park Service
Monday, June 14, 2021

"Broadway, in Mammoth Cave. One of the most-visited parts of Mammoth Cave National Park, the passage called Broadway, or "Main Cave", is a vast subterranean river channel, long abandoned by the waters that formed it. Near left center on the cave floor lie pipes made of hollowed tulip poplar logs, remnants of the nitre mining during the War of 1812. This view looks toward Rotunda and the Historic Entrance."

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The Essential RVing Guide

The Essential RVing Guide to the National Parks

The National Parks RVing Guide, aka the Essential RVing Guide To The National Parks, is the definitive guide for RVers seeking information on campgrounds in the National Park System where they can park their rigs. It's available for free for both iPhones and Android models.

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