Not sure who the author is on this, shows the importance of a text file in the maps folder with your name.

Images 

Pic 1 Overview	Pic 2	Pic 3

From the readme

dod_glace_t1

A midsize 4 points detonation map, 2 bombs each side to blow up access to a tank then a AAGun.
Has no overview.
This is a darkish map, lots of flames.

************ To install ************

The "dod" folder in the download should be copied into your "Day of Defeat Source" folder.

To find your dod folder…
1. Open your Steam Library
2. Right-click on the “Day of Defeat: Source” icon
3. Select “Manage” > “Browse local files” ….
4. A folder called “Day of Defeat Source” will pop-up, the dod folder is in there.
5. Copy and paste the “dod” folder in the download into “Day of Defeat Source” folder.