the heat hen map https://www.stow-ma.gov/sites/g/files/vyhlif1286/f/uploads/heath_hen_meadow_brook_cons_area_map.pdf shows as accessible, the Flagg Hill map at https://www.stow-ma.gov/sites/g/files/vyhlif1286/f/uploads/flagghill_rev_map.pdf shows no access. and the earlier response from SCC: 
Hi Alex:
Thanks for your message and trail updates.  You should know that the official trail maps for Flagg Hill and other Stow trails can be found here: https://www.stow-ma.gov/conservation-commission/pages/conservation-lands-and-trails

Only the colored and marked trails shown on these maps are official trails, and these are the only trails that are maintained by the town.   At Flagg Hill, in particular, the management plan calls for limiting trails to protect sensitive natural habitats – so it is one of two places where we give priority to natural resource protection over recreational use.  At our other properties we strive for a balanced approach between these two (sometimes) competing needs.

 

As a land manager it is frustrating to see trails being indicated on Alltrails.com that are unofficial social trails, herd trails, user created trails, unsanctioned trails, etc.  It is difficult to get Alltrails (and Google) to make corrections to maps to keep them current so frankly, we’ve quit trying. The maps that are published on the town’s website are the official maps.  It is interesting to me to see increasing controversy over the online trail guides and the challenging search and rescue situations that arise when trail users are lost or injured on some of these trails.  We have had the same issue here and it is of great concern to our public safety folks.