plain with wild vegetation in maasvallei nature reserve, meers tree monument with huge trunks of fossil oaks

aged ancient bare blue branch brown conservation countryside dead decayed dramatic dry ecology ecosystem environment europe field forest fossils grass historic history landscape leafless meadow meuse monument nature oak old outdoors park perspective plant reference reserve river rural season stump summer sunny tourism travel tree trunk wilderness wood woods plain wild vegetation maasvallei meers huge trunks fossil oaks background autumn trees sky day elsloo netherlands