No special access issues
Google maps will not give accurate directions to the crag. Rather, follow google maps to the junction linked here: (https://maps.app.goo.gl/4XoWcS4CaEXfB7ss9) and make a turn onto the road that leads southeast. Once you have turned, navigate on the dirt roads to reach the crag, location linked here: https://maps.app.goo.gl/qg2dRdjrH4BmUuU66. You may need to consult google maps in satellite view to see the dirt roads which will lead to Gagou.