This is the 7945th most frequent Russian word.
кобринском
"Кобринском" refers to something related to the town of Kobrin in Belarus, usually in the prepositional case.
In this sentence, "кобринском" is used as an adjective describing the district where the museum is situated, indicating possession or association.
Я посетил музей в кобринском районе.
I visited the museum in the Kobrin district.
Here, "кобринском" modifies "парке" to specify the particular location of the park, employing an adjective to classify the park.
В кобринском парке проходит фестиваль цветов.
A flower festival takes place in Kobrin park.
In this usage, "кобринском" clarifies the type of forest, showing its geographic or proprietary characteristics.