the "monument" at Playa Santa Ines

the "monument" at Punta Chivato

asked this question in some other groups as well
what is the "monument" near Playa Santa Ines that is mentioned on some maps?
and if it exists - where is it?





[Edited on 3-17-2025 by 4x4abc]

there is something important going on in this corner of the world
even this 1871 map shows a E. N. Base and E. S. Base
E. S. Base could be the monument location
can't see anything on Google Earth

Quote: Originally posted by 4x4abc

there is something important going on in this corner of the world even this 1871 map shows a E. N. Base and E. S. Base E. S. Base could be the monument location

Quote: Originally posted by lencho

My bet is those are primary survey points (Eje Norte y Eje Sur?). "Monument" is also a survey term.

sounds reasonable
too bad the plans are not very accurate
accurate like the initial concession map

Monuments sometimes move!

Quote: Originally posted by AKgringo

I don't know when the physical "monument" was set, but when the BLM re-surveyed their holdings in the 1980s it was discovered to be off by about a hundred yards on the northwest corner!

Quote: Originally posted by AKgringo

My neighbors to the north walked our property line with their smart phones

Edit: Indicating that we've reached the point where "Smart phones" actually are smarter than their owners?


.

[Edited on 3-17-2025 by lencho]

Quote: Originally posted by 4x4abc

I researched this a bit further. A base or baseline is common in surveying. A number of Mojons (survey points) were established in 1871 along the 27th Parallel. Someone had mentioned Cerro Mojonera in connection with this "monument" thread. Indeed, Cerro Mojonera played a role. It has one of the survey markers. On the old map it is called Cerro San Juan. On this map the 27th Parallel is called Mojonera del 27°. In surveying cornerstones or Mojons are also called monument. So there has to be a more or less clearly Mojon close to the Santa Ines beach at 27° Parallel I sent the map to David so he can make it available no sense to post it here with the bad resolution

Here is the map 'cleaned up':



[Edited on 3-19-2025 by David K]

Quote: Originally posted by lencho

It amazes me that old surveys were even as accurate as they were, considering the techniques they had available!

surveyors were always the smart guys
remember the pyramids in Egypt?
those guys were more accurate than early GPS units

consider this:
St Peter at the Vatican was built in 1506
architects of important buildings almost always align them to something similarly important
look at the shape of St Peter's Square and the adjacent buildings
as seen with god's eyes (thanks to Google Earth we can do the same now), the public space in front of St Peter's forms an "arrow"
it points to the Hagia Sophia in Istanbul - 859 miles away
accuracy is within a few inches
why the Hagia Sophia?
because it was an early Christian church built in 325
Constantinople (today Istanbul) or New Rome did become the second See of Christendom after Old Rome, and was ranked above the older Patriarchates of Jerusalem, Antioch and Alexandria
how do we know that this "arrow" at St Peter points to the Hagia Sophia?
because the architects (Michelangelo among them) wrote it down

so don't make the mistake and think the guys a long time ago were dull
granted, like today, most are dull - but a significant number has always been brilliant
with that said - surveying in the late 1800's was a highly accurate affair

now let's go find that marker at Playa Santa Ines!

By-the-way, the very top map, posted by 4x4abc, is the 1888 2-piece Charles Nordhoff map:
1888 Nordhoff Map
It comes from his book (the oldest book in my collection):



[Edited on 3-18-2025 by David K]

Edited above was the addition of this enhanced or 'cleaned-up' version of the map:

Full size https://octopup.org/img/media/maps/baja/1871--Baja-Californi...

Sized to fit on Nomad

Quote: Originally posted by 4x4abc

surveyors were always the smart guys remember the pyramids in Egypt? those guys were more accurate than early GPS units consider this: St Peter at the Vatican was built in 1506 architects of important buildings almost always align them to something similarly important look at the shape of St Peter's Square and the adjacent buildings as seen with god's eyes (thanks to Google Earth we can do the same now), the public space in front of St Peter's forms an "arrow" it points to the Hagia Sophia in Istanbul - 859 miles away accuracy is within a few inches why the Hagia Sophia? because it was an early Christian church built in 325 Constantinople (today Istanbul) or New Rome did become the second See of Christendom after Old Rome, and was ranked above the older Patriarchates of Jerusalem, Antioch and Alexandria