W Series drivers Ayla Agren and Beitske Visser were transferred to hospital after a horrific crash during the qualifying session at Spa-Francorchamps.
The pair were involved in a six-car collision at Eau Rouge that included Sarah Moore, Abbie Eaton, Belen Garcia and Fabienne Wohlwend.
Moore was first into the corner before losing the rear of the car and crashing into the barriers. Rivals behind followed suit colliding into the tire wall, with Eaton sent upwards after being hit side-on, while Visser was sent rolling upside-down.
There was extensive damage and debris, with video footage below showing cars strewn across the track.
In a statement, W Series said: “All drivers involved in the incident are undergoing medical assessment and two of the drivers – Ayla Agren and Beitske Visser – were transferred to hospital for further checks.
Since then Ayla Agren has been discharged from hospital.
Beitske Visser is still in hospital – a CT scan has revealed no injuries. She is still awaiting the results of a leg X-ray but is in good spirits and discussing the accident.