In the summer of 2000, George Robb Architect was retained by Credit Valley Conservation to undertake a comprehensive review and report of the stone works at the Belfountain Conservation Area (BCA), which lies in the Niagara Escarpment Valley of the Credit River, northwest of Toronto

Within a spectacular natural setting, a unique environment has been created out of the imagination of one of Ontario's early eccentric entrepreneurs. This kind of intervention is not likely to ever be duplicated. The stone works were created over a period of fifty years by Charles Mack, inventor of the rubber stamp. Originally known as Mack's Park, features of the estate included a miniature Niagara Falls, a cable suspension bridge and a man-made grotto. The centerpiece of the estate featured a stone bell-shaped fountain, intended to honour the village of Belfountain. Credit Valley Conservation purchased the 13 hectare property in 1959 and it currently operates as a recreation area, attracting 20,000 visitors a year.

A final report was submitted to CVC in December 2000. George Robb Architect recommended that wherever possible, repair and reconstruction should respect original details and replicate lost detail where appropriate. All restoration work should replicate the best traditional workmanship and material selection. A five year restoration plan was developed and approved by Credit Valley Conservation. In the summer of 2001, work commenced with the restoration of the masonry grotto walls. The next phase of the project is scheduled to start in spring 2002 and will repair the masonry retaining walls of the river.