I made a google map with the locations of the paintings from La Rioja:
For those of you not familiar with Google Maps, you can zoom in by clicking on the “+” icon. Click on the markers to see the images. It's a little buggy when markers are close together, but if you zoom in and click on the black dot it works great. You can also click on the map image and drag it around to move it. Keep zooming out (click on the “-” icon) to see the whole country with other markers.
View A Portrait of Argentina in a larger map