Unexpected surprise in a 100 year old ash tree

Today, when sawing a 100 year old ash tree, we came across an unexpected surprise. Write in the comments your thoughts about what this thing is. A shocking find in an oak tree Surprise in the oak sawing equipment: mail for cooperation: instagram TikTok Viber(Владимир) +375336271466 become a sponsor: , Shocking, woodworking, Surprise