Actually, you're looking at an SA-3 site instead of an SA-2. Some of the big indicators are:
1) Four launcher revetments instead of six. At the site to the south you can see the actual launchers in the revetments.
2) The launch sites have four rectangles clearly visible at the back of the launcher. These are wheel blocks that help locate and secure the reloading truck during reloading operations.
3) The site to the south has three of the four sites occupied by two-rail launchers. SA-3 launchers come in two varieties: two-rail and four-rail while SA-2 are single rail launchers only.
4) The mound in the center of the occupied site appears to have a Low Blow missile control radar on top. The photo will explain the V-shaped shadow with the hook on top.
1) Four launcher revetments instead of six. At the site to the south you can see the actual launchers in the revetments.
2) The launch sites have four rectangles clearly visible at the back of the launcher. These are wheel blocks that help locate and secure the reloading truck during reloading operations.
3) The site to the south has three of the four sites occupied by two-rail launchers. SA-3 launchers come in two varieties: two-rail and four-rail while SA-2 are single rail launchers only.
4) The mound in the center of the occupied site appears to have a Low Blow missile control radar on top. The photo will explain the V-shaped shadow with the hook on top.