Thanks guys, aware of all that but like BOAC said I have noticed that the FMC couldn't hack it with stiff crosswinds. Also with the varying bank angles to compensate for drift, what are the chances of it busting the safe holding area limits. I have noticed that the FMC sometimes do make some very untidy entries into the hold and turns onto the inbound legs.
The volcano is outwardly calm but vulcanologists think that magma below has still a good chance to spew upwards when tectonics favour an upsurge through the crust.