@lisam - my guess is that there are valves under the dirt in the top valve box.
Like @Thomas_Lerman suggested I’d turn the solenoid (the hexagon shaped device) on one of the valves in the bottom picture a quarter of a turn to see if water comes out of that zone. If water does come out then we’re down to an electrical issue. If water doesn’t come out then we need to get the water flowing as there is likely a manual cutoff valve or electric master valve before the zone valve.
I’m curious about the white wire in the zone 7 slot. With just two colors of wires - red and white and potentially two boxes of three valves apiece I’m wondering if that white wire is a common wire for the second set of valves, I’d label the white wire in zone 7 (so you can identify it) and move it to a C port. Be careful pressing in the wire release tab if you move it so it won’t get bent.