Parking lot with toilet by Hverfjall

There is a toilet (for 200 ISK) at the parking lot by Hverfajll crater.

Where is the parking lot by Hverfjall crater:

This is a parking lot directly at the beginning of the pathway on Hverfjall. Therefor for perfect description of the road please use the site about the Hverfjall crater.
GPS coordinators of the parking lot by Hverfjall: 65.612836, -16.875702 Take me there!