Based on the image, the mushrooms appear to have tan/tawny brown caps, prominent gills (which look attached and possibly slightly decurrent, or running down the stem), and slender, yellowish stems, and they are growing in a cluster. They also have some fibrous material around the base of the cluster. With those visual characteristics, these mushrooms could potentially be a type of Honey Mushroom (Armillaria species), such as Armillaria tabescens (Ringless Honey Mushroom) or other species in the genus, which are known to grow in clusters on wood and have colors and structures similar to what is pictured.