this is what I found out so far Q3Test maps bsp files and related message "information data"
vq3.bsp "Unauthorized conversion"
vq3k.bsp "=the Extermination squad's= TEMPLE OF DEATH!"
VQuad.bsp "MaC's VQ-3 with Quad"
maybe this helps to find out more about the map!

Update:
Q3Test Map "V3Test2" in dm17 style seem to be from the same Author and is also nowhere to be found.

Rainman's maps are made with the room and walls for good old fashioned rocket jump, plasma climb and strafe fights. Anybody that fancies a bit of that will have a great time, and recognise the combination of these moves soon remove the initial simplicity of the maps. MH, RL, PG are all included and ideal for this purpose. The atmosphere is awsesome in all rainman's maps injecting the gothic style of the time with somely sorely needed class. The maps by this author i assume would be great for rocket Arena (not that they are set up for that). They are in all respects what Q3 should have been in the first place but was not.

Finaly at least somebody noticed that gameplay is more important than brushwork (which, IMHO, ain't too bad also) =)

simple or not, it's great for small games... sometimes its nice to play a map that doesn't try to be "the star of the show". gameplay comes to the forefront.

..this map is simple but a blast to play. It has been on my clans server for quite a while....I love its simplicity...I use it for 1v1 and small ffa...too fun