An atlas of Earth’s mysterious places — megaliths, pyramids, lost and sunken cities — with the evidence shown plainly: what is verified, what is contested, and what is still unknown.

Data CC BY-SA 4.0 · Photos per credit

Explore

Atlas map
All places
Categories
Countries
Contested & pseudo

Community

Theories & discussion
Lists
News & resources
Submit a resource

Mysteria

About the atlas
Data & verification
Licenses & credits
Create an account

Search Mysteria

Search places, or jump to a section

The catalogue

Verified places tagged “semna”

3 places to sift through. Narrow by kind, country, period or how firmly each one is established — contested and pseudoarchaeological claims are labelled here, never hidden.

Filters

Clear all

Verification

Pick several

Verified3 Widely accepted0 Contested0 Hypothetical0 Unverified0 Pseudoarchaeology0

3 places

Temple complexes

Verified

🇸🇩 Sudan · Pyramid

Semna West Fortress (Middle Kingdom Nubian Frontier Fort)

Egyptian Middle Kingdom, 12th Dynasty · Ancient Egyptian (Middle Kingdom)

Massive L-shaped mudbrick fortress of 12th Dynasty Sesostris III (c.1878–1840 BCE), southernmost of four forts guarding the Semna Cataract narrows at the Egyptian-Nubian border (along with Kumma…

✓Verified

🇸🇩 Sudan · Ancient city

Semna and Kumma Fortresses

Middle Kingdom to New Kingdom (1900–1070 BCE) · Ancient Egyptian occupier

Twin customs forts Semna–Kumma bracketing Second Cataract with Sesostris III's negro-ship decree.

✓Verified

🇸🇩 Sudan · Pyramid

Kumma Fortress — Semna East

Middle Kingdom, 12th Dynasty · Ancient Egyptian

Rectangular eastern counterpart to Semna West across the 500 m Semna gorge, built to close the eastern channel and form a fortified river gateway with coupled gate signals.