Campaigners who want to halt development at Park of Keir have questioned the viability of the project a year on from a decision by Scottish ministers to grant planning permission in principle.
RAGE (Residents Against Greenbelt Erosion) said no further detailed plans have yet been submitted by Park of Keir Partners, including Judy Murray, tennis coach and mother of Wimbledon champs Andy and Jamie.
The project includes a new tennis and golf centre, including museum and visitor centre, indoor and outdoor tennis courts, golf course with clubhouse and practice areas, hotel with leisure and conference facilities, a multi-use sports pitch.