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| | Geotimes - October 2002 - Big Dig |
 | | The Town of Boston was originally founded on the small, 789-acre Shawmut Peninsula, a highland connected by a narrow neck to the mainland that high tides often breached. |
 | | Second, prominent glacial landforms, principally drumlins, exposed marine clays and granular glaciofluvial outwash features as well as complex, puzzling moraines exhibiting deformed and folded sediments, such as Beacon Hill created features that could function as natural defenses from seagoing enemies. |
 | | This estimate is qualified somewhat, because it includes former towns later annexed by Boston (Charlestown, Roxbury, East Boston, South Boston); portions of Cambridge and Brookline adjacent to the Charles River; and Logan International Airport. |
| www.agiweb.org /geotimes/oct02/feature_bigdig.html (2772 words) |
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