This is the 9390th most frequent Polish word.
vulcan
The word "vulcan" is not Polish; in English, it refers to the Roman god of fire or a related concept like a volcano, but it does not have a specific meaning in Polish.
In this sentence, 'wulkan' is used to refer to a natural phenomenon, a geological structure capable of erupting magma.
Wulkan Wezuwiusz jest jednym z najsłynniejszych aktywnych wulkanów.
Mount Vesuvius is one of the most famous active volcanos.
Here, 'wulkanów' is derived from 'wulkan', indicating things related to volcanos, in a plural form describing a specific park.
Podczas weekendu odwiedziliśmy Park Wulkanów wulkanicznych.
During the weekend, we visited the Volcanic Park.
In this context, 'wulkanami' is the instrumental form in plural of 'wulkan', used in relation to Adam's interest.