![Topographic map of the Ponkapoag Pond area of the Blue Hills Reservation in Massachusetts, with hypsometric tinted contour lines. Source data provided by the Office of Geographic Information (MassGIS), Commonwealth of Massachusetts Information Technology Division.](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a1/HypsoTintedContours.pdf/page1-800px-HypsoTintedContours.pdf.jpg)
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current | 20:33, 6 August 2011 | ![]() | 2,550 × 1,650 (674 KB) | Belg4mit | {{Information |Description ={{en|1=Topographic map of the Ponkapoag Pond area of the Wikipedia:Blue Hills Reservation in Massachusetts, with Wikipedia:hypsometric tint colored Wikipedia:contour lines.}} |Source ={{own}} |Author |
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