This tomb, possibly Early Minoan, is a circular tomb and mound of about 11 m. in diameter. It was robbed in antiquity and, I suspect, of no really great importance or significance in itself beyond helping to fill out the picture of the extent of circular tombs in the Mesara during the EM. Therefore the most important thing about it would be its exact position and that's what I want to establish. There are a number of ambiguities in the directions to this tomb so I decided to take this down to the ground and provide a full description of what our authors are trying to tell us.
I don’t know what these kandylakia are called in Crete but ours look like this:
What about the route itself?
In this aerial photo the 1400 m. route is shown in light brown. The river which Goodison & Guarita mention is in blue.
Since our authors don't precisely say here is a close-up of the actual exit that Goodison et al. are referring to when they reference the start of this 1400 m. route. Here's an aerial photo of it:
The route marked in red is the main highway from Herakleion to Ayii Deka. The outskirts of Ayii Deka are shown on the left (W). The turn that you make is labelled 'To the Tomb'.
If you're driving towards Ayii Deka then that turn is shown in the next photo from Google Street View.
Time for a close-up of the route's end and a tentative location for the tomb being sought.
This photo shows the route that you're driving on in light brown. The river that you pass is in blue and the arrow A marks the position of the 'tiny chapel' and the kandylakia. The line in purple is the 180 m. path that you take 'to the right'.
In this picture there is some ambiguity because the tomb cannot now be seen. I supposed that maybe the structure was to the SE and there is a circular feature there. But it is not large enough. Its diameter is only about 2.7 m. and we're looking for a feature with a diameter of 11 m. (approx.). I also want to point out the feature that I've called a 'Burn Circle' at the lower left. I often see these more or less circular features in the olive orchards of Greece; they are really just circles of ash where the farmers have burnt orchard rubbish. Wishful thinking often converts these things into tholoi.
So, perhaps the best position for our sought-after tomb is 35.056539° N, 24.982953° E.
No one claims that their work is error-free. Substituting 140 for 1400 is a tiny error in a really fine and useful article. In the field of computer science this would be labelled as just a bug. I shudder to think how many of these things there must be in my own work. It does illustrate, however, one of the real advantages that digital representation has over traditional print venues for scholarly work. This article is going to be around for a long time and the description for Tomb no. 31 will be misleading people for as long as it exists. If the information in Goodison et al.  (and several hundred others that I could name) were in the form of a database then such a flaw could be repaired for free and turned around in seconds. It's just like software in that respect. No professional expects software to be completely free of errors. No moral opprobrium attaches to this. Software authors recognize better than most other professionals that, when it comes to details, the human mind is basically trash. As a result a large part of software implementation consists of making provision for keeping flaws under control.
One of those devices is the version numbering system. As hideous as it may sound to an academic it may be time to start versioning articles and books. The versioning information goes along with the article/book and would explain what has changed since the last version and why. Of course this can only happen if these articles/books are online. A consummation devoutly to be wished.
Of course I also think that articles and books shouldn't be printed at all. It's outmoded. Why commit errors to epistemological prison?
Finally, let me express my gratitude to Goodison and Guarita for providing this gazetteer from which I've learned so much.
A new database for the Mycenaean Atlas Project (www.helladic.info) was delivered on May 11, 2018. Approximately 35 new sites were added in the Siteia region of Crete. The new DB is rev 0059.
Also don't miss my review of Against the Grain by James C. Scott. It's here: http://mycenaeanatlasproject.blogspot.com/2018/02/some-notes-on-james-c-scott-against.html
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(1) Goodison and Guarita , 186.