The Friends of Troll’s Knoll is a community group dedicated to preserving and maintaining the green space around the Fremont Troll on North 36th Street, under the Aurora Bridge. The Troll’s Knoll includes a garden area and in recent digging, this paver brick was unearthed. The name stamped on the paver, Denny-Renton, was a company which closed in 1927 and was in what is now part of the Cedar River watershed.

In December 2025 members of the Denny family, the original family who had the brick company, came to Troll’s Knoll for a ceremony to receive back the brick. Photos and story here.