Mass Underground South Boston
Boston · last checked Sep 27, 2026 · Report a wrong detail
- Cold plunge
Membership required. This place doesn't sell single visits or day passes.
The site says it is members only and does not offer day passes (South Boston and Charlestown).
- Day pass
- None: membership required
- Intro offer
- Not listed
- Membership
- Not listed
- Plunge temperature
- Not listed
- Sauna type
- No sauna listed
- Swimsuit
- Not listed
- Towels
- Not listed
- Booking
- Not listed
- Hours
- Hours not listed
About prices: Members only. Membership pricing is not published on their website.
Prices from Mass Underground South Boston's website, checked Sep 27, 2026.
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Prices and hours last checked Sep 27, 2026. Something wrong? Tell us.