Confidence: It's likely to be this, but I can't be certain.
Notes: Funnel-shaped flower. Tepals long and narrow, about 35mm long. 6 stamens. Very short flower stem. Leaves linear. I have hesitated between Sternbergia colchiciflora and S. lutea subsp. sicula, but eventually plumped for the latter since the leaves of the former appear after flowering. Rocky habitat. See also my next observation, which is similar but with more oval tepals.