Connecticut is the only U.S. state whose highest point is not a summit, but a "liner" where the state border reaches a maximum elevation on an otherwise undistinguished slope. The high point of Connecticut is 740 feet south and 80 vertical feet below the summit of Mount Frissell, which lies in Massachusetts. This place is commonly referred to as the "South Slope of Mount Frissell", but could also be called the south ridge, even if not a very pronounced one.
The highest summit (local maximum) in Connecticut is nearby Bear Mountain, about a mile away to the southeast and 56 feet lower than the South Slope of Mount Frissell. This state high point is also only a quarter-mile east of the monument marking the Connecticut/Massachusetts/New York triple meeting point.
Reaching the South Slope of Mount Frissell is an easy hike from Mount Riga road to the east, or a bit longer and steeper trip from New York state on the east over Brace Mountain..