Hemlock Gorge and Echo Bridge Gallery Low water flow over the Circular Dam in Hemlock GorgeThe circular dam from under the Route 9 bridgeThe dam from abovePhoto by Kenneth MalloryPhoto by Kenneth MalloryWalk past the circular dam.Temporary fencing installed in 2006DCR replaced a spillway dam that was in danger of failure.Work underway to replace the spillway dam. A temporary dam (the blue structure) was built to divert water during reconstruction.2011A goose finds a nesting placeWater pours over the circular dam after record rainfallTemporary waterfalls2010Devil's Den2006The bridge was closed for a few days...Echo Bridge reopened with temporary fencing and a more permanent repairWalkers thronged the bridge after the MWRA announced that it would be closed due to unsafe railings. The bridge was reopened after temporary fencing was installed.Part of the circular dam2005A hawk stays into NovemberDevil's Den caveNew echo platform at Echo BridgeRoute 9 traffic reflected in New PondHouse under construction next to the gorgeA new footbridgeThe old footbridgeTesting echoes under Echo BridgeBench in memory of Kenneth W. NewcombNew Pond in Hemlock Gorge ReservationThe view upstream from the bridge includes the site of Newton's first mill on the Charles River, built in 1588.From the echo platform under the bridgeA log in Hemlock GorgeBrian Yates memorial, Hemlock GorgeA bumper crop of acorns