This is a collection of rock here.

We'll list these from North to South:

Snacktime Crag

This is the northernmost crags within the MDC property. It is probably only 25 feet tall, and it faces west. It nearly abuts the private property and has a chain link fence on its left side.

L->R:

A. Twinkie, 6, 1p, 20', TR.

B. Yodel, 5, 1p, 20', TR.

C. Devil Dog, 6, 1p, 20', TR.

D. Oreo, 7, 1p, 20', TR.

Shipwreck Crag

A. Octopus, V1.

B. The Kraken, V3.

C. The Lifeboat, V0.

E. Ironsides, V1.

F. Shipwreck Traverse, V2.

G. Shipwreck Direct, V1.

H. The Captain, V2.

Moving Southeast - Eliminator Boulder (west of Eliminator Roof, Pinnacle Wall, and Pinnacle Boulder)

L->R:

A.  Tree Climb, V2, 12'.

B.  Pocket Cluster, V1-2, 10'.

C1. 2 Route , V1, 10'.

C2. 1 Route , V2+, 12'.

D. 3 Route, V0, 10'.

Pinnacle Wall is a small, 20-25 foot tall crag that faces southwest. It has a decent tree above for a toprope anchor. It lies in the north group of crags and is the southernmost of these crags. Long slings are useful here.

L->R:

A. Powerfool, 3-5, 1p, TR.

B. Overeasy, 4, 1p, TR.

C. Fool, 5, 1p, TR.

C2. No Fare, 4, 1p, TR.

D. Nonstop, 4, 1p, TR.

E. Inbound, 5, 1p, TR.

F. Outbound, 5, 1p, TR.

The Pinnacle Boulder and Eliminator Roof have a small set problems that are probably no more than 15 feet tall. This is a tiny area with a neat roof problem. While these are short rocks, a toprope is advisable until you have these wired, especially the Eliminator Roof.

Pinnacle Boulder

A. West Face, 10, 1p, TR.

B. Southwest Air, 8 or V1, 20'.

C. South Face, 10, 1p, TR.

Below

Boulder Below Pinnacle

A. Boulder Below Pinnacle Left, V1-2.
Eliminator Roof

A1. Side Eliminator, 8, 1p, TR.

A2. Top Eliminator, 10-.

Below:

Hillside Arete Boulder

A. Hillside Arete , V2, 15'.

From Lincoln Mahan: 

(1=Eliminator Roof & Eliminator Boulder; 2=Pinnacle Wall, Pinnacle Boulder; 3= Boulder Below Pinnacle; 4=unknown; 5=Snacktime Crag.)

Per Curtis Tripp: beware of poison ivy.

From Hammond Pond Parkway, head north to just short of Beacon St. On the west side of the parkway, there is a small parking area. Paaark. Walk west on the trail. Take the right fork. It is the first crag here.

Per Lincoln Mahan: this area is North of the Green Line (of public transportation) and could be potentially called North Webster Woods. You can park in the other small lot directly off of Hammond Pond Parkway (which splits the woods in half vertically, while the Green Line runs across horizontally).

Per Zakk Day: the GPS coordinates are 42.331523, -71.180885.

FWIW, I tried to move the pin to these above coordinates, but I'm not sure there is a crag there.