Although this plant is just outside the boundaries of the National Park, they are also found within the park. This plant appeared spontaneously this year - I have not seen it before in this location. Note the second photo for close-up of the labellum.
This species is variable. It can be dark grey or lighter grey with black lines. It can also have light brown markings on both forewing and hindwing (see next observation). Largish moth; eight appeared at the light-trap.