Naturminnesförklarad gran vid Trosby, Tjällmo

Up on a height is a thick spruce with a circumference of about 310 cm. The surrounding forest has previously been felled, but around the large spruce a grove has been saved. The spruce is a break in an otherwise monotonous environment and can act as a refuge for species that depend on old trees.

Natural monuments can be partly individual natural objects such as moving blocks, giant pots or old and large trees, and partly very small areas with interesting natural phenomena.

Natural monuments are protected by decision of Länsstyrelsen. The form of protection was introduced in 1909, and most natural monuments in Östergötland were created before 1964 when the Nature Conservation Act came into force. Today, Länsstyrelsen very rarely decides on new natural monuments.