Headlines the Washington Post: Iran test-fires missiles, shows secret silos.

What please is secret when it is officially and publicly announced? These silos are just as "secret" as the "secret" enrichment site near Qom which was announced by Iran to IAEA only to be called "secret" after that happened. From the WaPo piece:

Iran’s Revolutionary Guard Corps is conducting a 10-day series of missile tests, including the firing of medium-range missiles at targets at sea, and it has revealed a previously secret network of underground missile silos, Iranian state media reported Tuesday.

That "previously secret network of underground missile silos" is known to anyone interested in the issue at least since those silos appeared in publicly available satellite pictures in 2008.

Missile silos near Tabriz, Iran – Google maps satellite view

In the middle are two sliding roof silos each with an associated concrete pad which is the base for erecting the missile from a truck to lower it into the silo. The two structures on the top and at the bottom are exhaust channels which let the fumes out when a missile is fired. Another pair of such silos is a few hundred meters north west to this one.

Besides the Tabriz silo site there is at least one other well known one in Iran near Khorramabad.

Given today's satellite imaging and ground penetrating radar technology it is nearly impossible to build a secret missile silo facility. Missile sites like the Iranian ones, or the little reported on Saudi Al Sulayyil base with those liquid fuel Chinese CSS-2 missiles which were recently upgraded to solid fuel variants, are never really "secret".

Calling them such is just hype.