Holden, along with twelve other communities, is part of a regional open space plan called the Central Penobscot Regional Greenprint. The Greenprint is a regional vision for environmental and economic opportunity and its goals are to protect the Penobscot Valey's unique "Quality of Place" and to establish a forum for regional cooperation in implementing the open space plan.
Penobscot Valley Community Greenprint Internet Mapping Site
Penobscot Valley Community Greenprint Report