European beech - Silver fir dinaric virgin forests Pečka (area of 60 hectares) within forest management unit Soteska (Photo by Ferlin©).

Optimum forest development stage of beech (with some under-storey Silver fir) dominating in the virgin forest (Photo by Ferlin©).

Initial regeneration of beech (with some under-storey firs, waiting for the opportunity to "sprint" up) under canopy of a late beech optimum developmental stage (Photo by Ferlin©).

Late optimum development stage of high quality beech with its vigorous regeneration (Photo by Ferlin©).

One of many virgin beech stems of highest possible wood quality, proofing that the nature is the best and most reliable "silviculturer" (and teacher of the silviculturists) (Photo by Ferlin©).

Early initial beech development stage under canopy (a virgin forest "ticket") and its strong natural selection and tending influence (Photo by Ferlin©).

Later initial beech development stage (a virgin forest "thin pole stand") as a low-density group of very qualitative trees, still under maintenance and tending by surrounding old tree crowns (Photo by Ferlin©).

The virgin forest "roots" (of Silver fir) (Photo by Ferlin©).

Multi-layer ("plenter") development stage with Silver fir (not frequent for this, dominantly beech forest phase). Majority of large fir trees died in last decades, however, under-storey and middle-storey firs - 100 to 200 (!) years of age - retain their vitality (Photo by Ferlin©).