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FreshwaterSinkholeDeep DiveHistoricalTechnical DiveUnverified

NBM Dive Site Resource

Lake Otjikoto

Tsumeb, Oshikoto Region, Namibia

UNVERIFIED — Lake Otjikoto is a permit-controlled freshwater sinkhole dive northwest of Tsumeb. Its approximately 55 m underwater museum preserves First World War artillery and ammunition; the wider lake is reported near 100 m and may extend into deeper lateral cavities.

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Historic Picture Placeholder

Old-fashioned maritime line drawing reserved for a future historic photograph
Historic Picture PlaceholderHistoric photograph pending research and rights review
WaterFreshwater
AccessAdvance permission and a current diving permit are required. Reconfirm the managing contact, permit, gases, oxygen, communications, surface support and evacuation plan before travel.
ExperienceThe underwater museum is a deep technical objective for divers trained beyond 50 m. Shallower activity must still follow the permit holder's plan, altitude procedures and certification limits.
Maximum depthUnderwater museum around 55 m; wider sinkhole commonly reported near 90–100 m with possible deeper lateral cavities. Planning context only, not a target.
Best seasonPADI identifies October–April as Namibia's broad optimal period. Permit and conditions control access; a documented technical dive occurred in June 2024.
VisibilityPotentially clear inland water, but algae, sediment, weather and diver traffic can change conditions; fine sediment can cause rapid loss of visibility.

Aquatic life at this dive site

What divers may encounter

Three reviewed connections are featured here. Sightings vary by season, conditions, and chance, so they are never guaranteed.

Profile connection reserved

Aquatic life research in progress

NBM is reviewing a likely local species for this position.

Profile connection reserved

Aquatic life research in progress

NBM is reviewing a likely local species for this position.

Profile connection reserved

Aquatic life research in progress

NBM is reviewing a likely local species for this position.

Site media

Photographs

Three views rotate from the published gallery on each visit.
Surface view of Lake Otjikoto in Namibia.
Exact-site surface overview; not underwater conditions, a dive entry or a navigation point.Zairon / Wikimedia Commons · CC BY-SA 4.0Source ↗
Illustrated scuba diver reserved for a future dive-site photograph
Dive Photograph PlaceholderDive-site photograph pending
Illustrated scuba diver reserved for a future dive-site photograph
Dive Photograph PlaceholderDive-site photograph pending

Contributor media

Dive videos

Three featured video positions are reserved on every profile.
Dive-site video pending
Dive-site video pending
Dive-site video pending

Published reference location

Location map

The marker shows the public coordinates associated with this profile. Confirm current access, moorings, and departure details before the dive.
Published reference coordinates-19.19500, 17.55100
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Map zoom level 6 of 11

Map data © OpenStreetMap contributors

Recent field observations

Diver-reported temperatures

Automatically checked observations from dives during the past 14 days. Three reports are visible at a time; scroll for more.
Automatically checked
No recent diver reports from the past 14 days

A report that passes the automatic checks will appear here with the dive date, diver’s display name, and temperatures at each depth.

Reports are automatically checked for plausible dates, depths, and temperatures. They are observations, not forecasts; confirm conditions before diving.

Diver field observation

Report temperatures

Reports publish automatically when the date, depths, and temperatures pass the checks. You must be signed in to submit.

Depth readings

Why divers know this place

Highlights

Deep freshwater sinkhole, submerged forest remains and a First World War underwater museum.

Before you arrive

Access notes

Rounded lake-area display point only—not an entry, descent line, artifact position, cave route, mooring or navigation waypoint. Do not touch or move historic material.

Plan within your training

Conditions and hazards

Deep/decompression and altitude exposure; possible overhead cavities; entanglement; unstable or unexploded ordnance; silt-out; remote evacuation. No penetration or deep objective without matching technical and overhead training.

At the site

Facilities and support

Public visitor access exists, but PADI lists no in-country shop. No routine fills, oxygen, chamber or technical rescue support were independently confirmed.

Independent resource notice

This record is a starting point for independent verification. Access, closures, moorings, weather, currents, depth, visibility, operator availability, and site conditions can change without notice. Confirm current information with the responsible operator, property owner, managing authority, or another qualified local source before planning or attempting a dive.