Research questions

The questions to resolve

• What is the last document describing the chest itself, rather than only the vessel?
• What supports the competing voyage reports and the reference to Cartagena?
• What did the export permission cover, and where is its actual wording?
• What can the fragment, drawings, measurements and previous investigations establish?

The conditional situations below are research questions, not findings.

Possible explanations and their tests

Original documents still needed

1. The museum correspondence. Locate the January 1838 letters, trustees’ decision, Campbell’s embarkation letter and the 1839 insurance papers. Establish exactly which document describes the chest’s loading and the source of the loss notification.
2. Reported permission. Examine FO 141/4 and FO 142/10 with their enclosures. Seek the actual firman, copy or Egyptian registration and its terms; no particular surviving permit is assumed.
3. The last voyage reports. Compare complete Malta and Livorno records, event dates, reporting dates and the vessel’s identity. Trace the original basis of the Cartagena reference.
4. The fragment and vessel. Examine EA6646’s acquisition and material records, and the complete 1835 Beatrice survey, to strengthen the reference documentation.
5. Earlier investigations. Obtain the operational files needed to define actual survey coverage and the evidence behind candidate rejection.

As of 19 October 2026, no request for these archival files is logged as sent. The originals above remain awaiting consultation. Updates will identify actual requests, replies and examined documents; private correspondence will not be published automatically.

Object measurements and find context

The original architectural Plates I–III have now been obtained and checked alongside the account. Plate III locates the illustrated stone chest and the separate F find-context marker. The source drawings and published dimensions are available together on the object page.

Any new geometric interpretation must identify its source measurements, tolerances and assumptions before being used in the documentary account.

What might the stone chest look like today?

The historical starting point

Vyse describes a polished, architecturally decorated stone coffin, using the material name “basalt”. That historical designation is not a modern petrographic analysis. He also records a broken lid before the reported loss; Perring’s illustration restores it. An underwater assessment would therefore need to distinguish earlier damage from any later breakage. V84 V85 PLATE-SARC

What comparative research can tell us

Ricca and La Russa’s review explains how underwater stone condition depends on both its material and its environment. Surface growth and deposits can obscure detail; the severe biological boring discussed particularly concerns carbonate stones. It cannot simply be transferred to the historically described “basalt”. STONE20 · pp. 403–405

A primary experiment by Cámara and colleagues compared exposed, intermittently buried and buried marble specimens in the Bay of Cádiz. After 18 months, exposure affected colonisation and deterioration. Its shallow-water marble results cannot establish what this sarcophagus would look like after nearly two centuries at an unknown depth. MARBLE17 · methods and discussion

These are working possibilities. The table does not identify the condition of Menkaure’s sarcophagus.

What would resolve the question?

A confirmed identification, contextual photographs, measurements, a survey of sediment and surrounding remains, and assessment by stone conservators would provide the necessary evidence. Depth alone would not establish preservation. No exact colour, surviving percentage of decoration, intactness or present-day image is claimed here.

Documented conservation comparisons

Two photographic cases, their observations and limits

Qaitbay: a changing visible surface

The survey paper places the site in 2–9 m of water. Comparing campaigns, the researchers report that concretions and changing sand levels altered visible surfaces and complicated matching features. The photograph’s individual stones have no verified lithological identification in its caption.

QAITBAY19

What the comparison supports

Surface cover and burial can change what a camera records. A shallow architectural assemblage provides no direct estimate for a transported sarcophagus at an unknown depth or exposure duration.

Antikythera: recovered marble sculpture

Martens identifies this colossal marble Herakles and describes fine-grained white marble in the assemblage. Parian origin is a macroscopic attribution, not an archaeometrically established provenance in that study. He reports marine pitting of the marble statues and surviving tool traces on some parts protected by sediment.

MARTENS25

What the comparison supports

Overall form can survive alongside loss of surface detail. The ancient wreck, carbonate marble and later conservation create substantial differences from Menkaure’s historically described “basalt”. No numerical damage rate is transferred.

Applying comparisons responsibly

Useful question	Evidence still required for Menkaure
Could sediment obscure the object?	Actual burial, sediment and exposure conditions at an identified site.
Could growth obscure carving?	Images and a material-specific conservation assessment.
Would the stone remain intact?	Evidence of fractures, context, handling and the loss event.

These photographs are records of other objects and sites. They are not reconstructions of the missing sarcophagus. The underlying experiment and review are available separately.

MARBLE17STONE20

Read the conditional conservation scenarios ↗

Earlier initiatives requiring original records

The Previous searches page describes documented fieldwork and proposals. The claims below are retained as leads. Dates and outcomes have not been independently established from the original project files.

Suggested enquiry points include the foundation, relevant Spanish cultural and naval archives, and the named participants’ papers. No shelfmark or custody is asserted for a file that has not been identified. Relevant repositories and shelfmarks remain to be confirmed.

Fiechter’s research papers

The catalogue identifies CH MDI, Jean-Jacques Fiechter, JJF 10, associated with the 2001 historical study and the separate 2005 novel. The papers and the complete historical study remain to be examined; their identification does not establish that any particular transport letter or survey record is present.

Historical export documentation

The administrative chain and the distinction between Campbell’s reported permission and an examined permit are documented separately.