Cisco ASA IPSec tunnel to tunnel routing.

We've got two site to site IPSec tunnels setup to connect to our ASA 5520

Site1 and Site2

Site2 needs access to network resources on site1.

Is this possible?  Because I haven't been able to make it work.

I can access both sites from the 5520 they're tunneled into but I can't go from Site2 > ASA5520 > Site1.

Thanks for the help.
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PIX/ASA 7.x and later: Site to Site (L2L) IPsec VPN with Policy NAT Configuration Example
Your spoke routers (Site 1 & Site 2) need to have static routes configured.  They can't talk because they don't have a route to the remote network in their routing tables.

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