---
title: 7,000-year-old underwater wall raises questions about ancient engineering and lost-city legends
url: https://bigthink.com/strange-maps/submarine-wall/
edition: /collider/2026-01-27/index.edition.md
position: 8
date: 2026-01-27
source: mailchimp
original: https://mailchi.mp/pathwright/collider-january-27-26
retrieved: 2026-11-09
visibility: public
author: /people/justin-hall.person.md
emoji: 🤔
---

🤔 **[7,000-year-old underwater wall raises questions about ancient engineering and lost-city legends.](https://bigthink.com/strange-maps/submarine-wall/)** “Scientists have identified a stone wall nearly 400 feet long, lying 30 feet beneath the surface of the Atlantic Ocean. It was built by hunter-gatherers more than 7,000 years ago, though its purpose remains uncertain.”

[Big Think](https://bigthink.com/) ∙ Article