An access gate and associated systems, apparatus, and methods are provided. The access gate provides access to cross a wall and may comprise at least one hinged wall portion configured to be moved between an open and a closed position. In the closed position, the hinged wall portion acts as a barrier between a first and a second side of the wall. In the open position, the hinged wall portion allows passage between the first and second sides of the wall. The access gate may comprise a crossing surface to allow passage between the first and second sides of the wall; and at least one hinged surface door configured to be moved between a closed and an open position. In the closed position, the surface door prevents access to the crossing surface and provides a walkable/drivable surface. In the open position, the surface door provides access to the crossing surface.