Since the Branford Land Trust sculpture is located on Northford Rock then 'Lunch Rock' appears to be located just southeast of East Stooping Bush Island. It appears on the NOAA Chart as 'Marine Island' and appears to have the local name of 'Spencer Island'. A lot of the islands have two names: one on the charts and a local name. At least there was not a 'No Trespassing' sign...

: Great group and great weather way beyond our expectations. Cool new
: lunch spot on an unnamed rock just to the east of Northford Rock
: with a sheltered seaweed mat landing that was perfect at a
: fairly low tidal stage and will now be known as LUNCH ROCK!
: Lunch Rock Harbor shown...