Australia have taken six more wickets to leave England teetering on 94-8 at tea on the second day of the first Ashes Test match in Brisbane.
Ryan Harris and Mitchell Johnson struck to remove Alastair Cook (13) and Jonathan Trott (10) in the half-hour before lunch at The Gabba, which meant that the tourists resumed on 55-2.
The pair inflicted more damage in the second session, instigating a monumental collapse in the England batting ranks.
Kevin Pietersen (18) was the first to go when he drove Harris's delivery to George Bailey at mid-wicket, before the watchful Michael Carberry (40) edged Johnson to Shane Watson at slip.
Nathan Lyon then hit twice in two balls to send Ian Bell (5) and Matt Prior (0) walking, leaving England completely rattled on 87-6.
The Aussies did not finish there though, as Johnson took Joe Root (2) and Graeme Swann (0) to cap a pivotal session in a match that had been going in the tourists' favour.
Stuart Broad (4) and Chris Tremlett (1) will come out after tea with England trailing by 201 runs, and still needing two to avoid the follow-on.