cracked trunk longitudinally. it can be a poorly cultivated double crown with a cavity, or a lightning strike that split a tree. a

arborist bare bark blue branch broken can cavity cordata cracked crown cultivated cut damaged dangerous decay double environment falling forest garden hollow illness landscaping lightning linden longitudinal longitudinally oak outdoor outdoors park petraea poorly quercus robur rope safety sky split spring storm strike that tight tilia timber travel tree trunk tying walker weathered winter wood