I've been wondering for years about this one too. I've always assumed it was a water pipeline. Any authoritative sources on this?
Wayne Manuel On Fri, Apr 8, 2011 at 10:24 PM, Eugene Alvin Villar <[email protected]>wrote: > I was editing in Diliman yesterday when I noticed that the linear > boundary between UP Diliman and Loyola Heights and Pansol[1] > apparently went further northeast and southwest than I thought. If you > go northeast you'll notice that the southeast perimeter of Ayala > Heights[2] follows the same line. If you go further northeast, other > residential subdivisions follow the same line[3]. Go further northeast > into Rizal and there's a parallel road that follows the same angle[4], > which in Google Maps is named "Daan Tubo". So this is a pipeline? > > Interestingly, the footway from Katipunan running along UP Diliman is > also called "Daan Tubo"[5]. I don't think it's a coincidence that > these two ways kilometers apart are named the same thing. > > If you go the opposite direction, it seems that the barangay > boundaries between East Kamias and the Quirinos follow the same line > and ends near Cubao[6]. > > But, if you switch to satellite imagery, such as in Brgy. E. Rodriguez > in Google[7], you can see the same line via the house lots! You can > follow the same line all the way into San Juan where it disappears[8]. > > Is this a real pipeline, possibly abandoned? > > I have 2 theories. > > 1) This is an oil pipeline. If you follow the line into Manila, it > goes close to the Pandacan oil depot. But why would it go to Rizal? > > 2) This is a water pipeline. The line's end in the northeast is > somewhat close to Wawa Dam and this dam used to supply Metro Manila's > water before the Angat-La Mesa dam system became operational. In > addition, the line passes right next to the MWSS reservior at San > Juan[9]. I have a hunch that this is the correct answer. > > What do you guys think? :-) > > Here's a overview map of this line: > > http://maps.google.com/maps/ms?ie=UTF8&t=k&hl=en&msa=0&msid=213651493644683398187.0004a0688716ea01927e5&ll=14.66929,121.041527&spn=0.163409,0.312424&z=12 > > > [1] http://osm.org/go/4zhTLvxM-?m > [2] http://osm.org/go/4zhTzuAL--?m > [3] http://osm.org/go/4zhT@d1F--?m > [4] http://osm.org/go/4zhcZBkv-?m > [5] http://osm.org/go/4zhTkJ3ti-- > [6] http://osm.org/go/4zhSdpfW?m > [7] > http://maps.google.com/?ie=UTF8&t=k&ll=14.626181,121.052459&spn=0.005108,0.009763&z=17 > [8] > http://maps.google.com/?ie=UTF8&t=k&ll=14.609478,121.034564&spn=0.005108,0.009763&z=17 > [9] > http://maps.google.com/?ie=UTF8&t=k&ll=14.614253,121.040915&spn=0.005108,0.009763&z=17 > > _______________________________________________ > talk-ph mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-ph >
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