Is it possible to restore data from a non-persistent DM snapshot after crash?

I often use non-persistent device mapper snapshots, an example table looks like this:

0 10485760 snapshot /dev/sdc3 /dev/sdc6 N 16

In case of a crash, I still have both /dev/sdc3 and /dev/sdc6 because disks are non-volatile. But is it possible to get that snapshot device back, or at least recover the changes from /dev/sdc6 somehow? I know that persistent snapshots exist for my purpose but I'm still curious. Thanks.