I believe is this institute (I did a Google Search):
I believe it has a delegation in Madrid.
But I am not an expert in this area... I may be mistaken, but I believe that they have a good fame in restoration.
Spanish Name: "Instituto de Arqueología Alemán". That is the only sure data I can tell you.
Just for your information Gaeius: The restauration that is being made is not agressive like the Roman Theatre of Mérida, where now a lot of mistakes have been detected. It is being rebuilt only what is well known. There is a lot of help from a "German institute".
The history of the theatre:
Constructed under Augustus.
End II century - beginning of III: a fire destroys it. When the wooden roof collapses, it takes with it a lot of decoration (found now, will be exposed in the new Museum, architect Moneo).
V century: A market is made with the remains of the theatre. A part of it has been preserved, it's on the opposite place of the new wall of the photos.
VI Byzantium invades the south of Spain. Some Houses.
VIII - XI: Muslim houses
XII - XX: Christian Medieval houses - Modern houses over it.
I have written it only with my brain (I know, I know, I need more english vocabulary 
), so it may have mistakes. But now you have an idea of the Theatre's history.
Just for your curiosity...
Go and see the work of my competitor in this stuff of the roman theatre of Cartagena, AVCESAR. It's not made with sketchup, and the images are captures, not renders... yet. But if you like arqueology you must see it.
I have been playing with D. Bur's plugin (I have problems importing my own data at the moment, but sure it works), and I have read about the plugins.
If someone combine contour + cloud of points + volume measurement, you have a basic topographic plugin... (dxf would be dreaming, of course, for the presentations )
I have to do some more work now, but I will study the cloud plugin. Thanks 
I don't know if it could be possible, because I don't know programming. I did a search with "points" and "cloud of points", but I didn't find anything.
Well, in my job I have to use a GPS (or a topographic device) to measure a cloud of points. Usually, I have to know the stock of a material (like sand, for example). After doing it, I have to triangulate it with a program. In that sofware, I create a polyline, and I measure the volume inside that polyline. After that I erase all the points inside the polyline (excepts the polyline), and triangulate it again (just with the points of the polyline). I obtain a second volume. The difference between the firs and the second volume gives me the amount of sand I have.
I contour it sometimes, to make maps. I usually take thousands of points...
¿Could it be turned into a topographic plugin for Sketchup?
Consider that is just a question. I have to be sure and I use a reliable software, and I will continue using it for obvious reasons. So I believe that I am losing my time asking you and making you to lose yours by reading my.
But I believe is an idea, and I wanted to say it here. I don't know why, perhaps I have fun with sketchup and I was thinking of my job 
As far as I know, the roman theatre in Lisbon is very bad preserved.
Perhaps you may find more information about Braga's one, although is being excavated yet.
I have to say it: Braga in spanish means "panties"
Really interesting, thanks a lot
And you can see the urbanistic pressure in the coast of spain, too...
There is another one that is making his own render, but he is not using sketchup. I keep in contact with him. You can see his renders in the link to the forum in spanish I posted.
And there is another forum that you can consult with a lot of geeks about the theatre and more renderings from the other working on that renderings. I don't write there because I was... banned from there (everybody was with me, spanish moderators in skyscrapercity are known for their decisions 
)
This is the page:
And if you are interested in 3D for arqueology, you must visit this page (they are profesionals, they are making "the oficial rendering" of this roman theatre, but they keep it secret, for the moment 
:
And their forums:
But they are in spanish. Anyway, try to use Google automatic translator, and don't miss the photos.
P.D.: It works:
I see that imageshak has disabled the photos. You can see them yet by clicking over the frog. If you can't see it yet, refresh the page (press F5).
That's all I can say (for the moment).
This is my first post here. And my first serious project in sketchup. So hello everybody, and forgive my spanglish
The actual situation of my project is this:
There are yet a lot of work to do. I have made a lot of components and the actual size is 8,7 mg, unfortunately I am near the 10 mg file size limit in 3D Warehouse.
Textures are not definitive, and blablabla... you know.
I will post from time to time.
The dimensions of the theatre are the most accurate I have been able to make.
You can find photographies of the actual restoration of the theatre here (sorry, in spanish, but you will find an enormous amount of photos, thanks jarm):
http://www.urbanity.es/foro/showthread.php?t=4885&page=5
I hope that I see you soon.
