That's a bellmouth leading to 9th Street. There was a proposal to extend the Hudson Tubes (now PATH) to Astor Pl station on Park Avenue South. It's probably some equipment there
Yes, the H & M (the original railroad that became PATH, not that store) had the rights to extend either to Astor Place or the Grand Central. In the end only a short distance of tunnel was built. There's also a seepage pump somewhere around there, hence that weird noise.
That's a bellmouth leading to 9th Street. There was a proposal to extend the Hudson Tubes (now PATH) to Astor Pl station on Park Avenue South. It's probably some equipment there
Yes, the H & M (the original railroad that became PATH, not that store) had the rights to extend either to Astor Place or the Grand Central. In the end only a short distance of tunnel was built. There's also a seepage pump somewhere around there, hence that weird noise.