1. Dark Matter Theory for Oregon Vortex, Mystery Spots and Gravity Hills Revised April 6, 2015
Sing H. Lin , Ph.D., 林星雄·博士
In New Jersey, USA

2. Change in Height – Mystery in Oregon Vortex

3. Change in Height – Mystery in Oregon Vortex

4. Carpenter Level shows the ground is level

5. Mystery of Change in Heights in Oregon Vortex and in Several Other Mystery Spots - 1
Mystery: The relative heights of two persons change substantially when they switch their standing positions on a level ground
Such mystery has been demonstrated to and observed by many tourists for many years at Oregon Vortex, and at similar Mystery Spots at Santa Cruz and several other locations.
Usually the tour guide show that the liquid bubble in carpenter level indicates that the ground is level in all these demonstrations of change in relative heights.

6. Mystery of Change in Heights in Oregon Vortex and in Several Other Mystery Spots - 2
Such demonstration is often surrounded by a big crowd of many tourists standing at various positions, distances and angles to watch the demonstration of the mystery
Everybody see the same mystery of change in relative heights no matter which position, distance and angle is the observer watching
In other words, the demonstration does not require the observer to be at certain special location or special distance or special angle in order to see such mystery
Even the two tourists who are doing the demo also see the same mystery

7. More Video Demos of such Mystery at several different Mystery Spots

8. Some Known Locations of Mystery Spot
Oregon Vortex in Gold Hill, Oregon
Mystery Spot in Santa Cruz, California
Cosmos Mystery Area in the Black Hills National Forest, South Dakota
Mystery Hill in Blowing Rock, North Carolina
Mystery Spot in St. Ignace, Michigan
Montana Vortex in Columbia Falls, Montana
Teton Mystery in Jackson, Wyoming

9. Great Mystery
Many people simply dismiss such mystery as illusion in human perception
Illusion Theory asserts that
Gravity in these Mystery Spots is normal
These mysteries are due to illusion in human perception
But my 22-year research shows that these mysteries are real and are not due to illusion as explained in the following

10. Astronauts Grow Taller by 2 to 3 inches when they are in space
It is a well known fact that astronauts grow taller by 2 to 3 inches when they are in space under weightless condition
The height of a human being is not constant, but depends on the strength of the local gravity pulling down on the human body
If the strengths of gravity are different substantially at those two standing positions on the demonstration platform, the human height can be very different at those two standing positions.

11. Detected Significant Abnormal Gravity in Mystery Spots
Significant abnormal gravity has been detected at some mystery spots by (1) strange behavior of land survey instrument, (2) measured significant gravitational time dilation, (3) asymmetric pendulum and (4) measured gravity strength differs significantly (10 %) from that of normal earth gravity on earth surface
These four sets of evidence plus two more evidences against Illusion Theory are described in more details in my companion web page at:

12. My Explanation for This Great Mystery of Change in Height
Two contributing factors:
Abnormal gravity as the main contributor
Tilted Ground as the secondary contributor
Carpenter (Bubble) level cannot show level ground correctly when the local gravity is abnormal

13. Detection of Abnormal Gravity at Mystery Spot in Michigan by Three Surveyors
In early 1950s’, three surveyors discovered the Mystery Spot at St. Ignace, Michigan
They stumbled across an area of land where their surveying equipment didn’t seem to work properly
No matter how many times they tried to level their tripod, through the use of a plum-bob or bubble level, the plum-bob would always be drawn far to the east, even as the bubble level was reading level.
The gravity in that particular area is so abnormal that their land survey instrument could not function properly.

14. Adjustable Tripod and Hanging Plumb Bob for Land Survey Measurements

15. Plumb Bob Hanging Down from Top of Tripod

16. Theodolite – Land Survey Instrument on Top of Tripod

17. Theodolite on Top of Tripod has a Plate (bubble) Level, and a set of Leveling Screws

18. Circular (Plate) Level and Tubular Level with a Liquid Bubble

19. Land Survey Depends on Bubble Level, Plumb Bob and Normal Gravity to Establish Reference Horizontal Plane and Reference Position for Precision Measurements

20. Abnormal Gravity with Small Scale Structure of Gravity Vector in Mystery Spots
Liquid bubble level and plumb bob on survey tripod show different directions of gravity vector at Mystery Spot
The direction of gravity at the top of tripod is different from that of plumb bob hanging down
The direction of gravity vector changes in small scale distance of one or two feet
This is very unusual because the direction of normal gravity of earth usually do not change in such short distance

21. What is the Source of Abnormal Gravity at Mystery Spots and Hundreds of Gravity Hills?
The strength of abnormal gravity must be significant percentage of the normal earth gravity on earth surface to be able to produce these gravity mysteries at these Mystery Spots and gravity hills
But the physical size of the source of such abnormal gravity must be very small in the order of a few feet or less because:
Its gravity strength diminishes very fast to negligible level just a few hundred feet away
The direction of abnormal gravity vector can change in small scale distance in the order of foot

22. Estimated Extreme High Mass Density of Small and Compact Source of Abnormal Gravity
Information from Mystery Spots and gravity hills indicate that the physical size of the source of abnormal gravity must be very small and yet it produces very strong gravity to cause those gravity mysteries
My estimation is that the small and compact nugget of the source of abnormal gravity must have a mass density at least 1,000 times greater than that of average ordinary material on earth surface to be able to produce such strong gravity in such small area.

23. What is the Source of Abnormal Gravity? Answer: Dark Matter
Our familiar ordinary matter on earth surface cannot have such extreme high mass density (1,000 times or more of average ordinary matter on earth)
Many investigators have done many kinds of measurements in mystery spots and gravity hills
Many visitors and tour guides have visited these mystery spots and gravity hills
But for so many years at hundreds of gravity hills and several Mystery Spots, nobody has seen or touched such strange and compact source with such extreme high mass density
We cannot see it, cannot touch it, but we can feel the effects of its significant gravity – Strong hint of dark matter on earth
I call such strange source of abnormal gravity as some kind of Dark Matter

24. Dark Matter: Oregon Vortex Experience - 1
This strange compact source of abnormal gravity should be inside the Oregon Vortex with about 150 feet radius exhibiting gravity mysteries
John Lister, a Scottish physicist, geologist and mining engineer, spent more than 30 years from 1930 to performing more than 14,000 experiments and measurements in Oregon Vortex
But John Lister did not see and did not detect such strange matter with such small compact size and with such extreme high mass density
Subsequent to John Lister, several other researchers had also done extensive measurements in Oregon Vortex for several years. But they also did not detect such compact sized strange matter with such extreme high mass density

25. Dark Matter: Oregon Vortex Experience - 2
Oregon Vortex is a historical gold rush area with many gold miners working in that area.
Those gold miners felt the gravity mysteries of Oregon Vortex, but nobody had seen, or detected or touched such compact strange matter with such extreme high mass density.

26. Dark Matter: More Experience - 3
Thousands of visitors have visited Oregon Vortex every year for many years since 1930
The owner and several tour guides have been working in Oregon Vortex for many years
But nobody have seen or touched such strange matter in Oregon Vortex or other similar Mystery Spots
For so many years, no body have ever seen or touched such strange matter in hundreds of gravity hills all over the world

27. Dark Matter based Theory and Model for Oregon Vortex, Mystery Spots and Gravity Hills
These facts lead me into the Dark Matter based Theory and Model for the very small and compact nugget of dark matter with extreme high mass density as the source of significant abnormal local gravity
However, dark matter does not interact with our familiar ordinary matter by any force except gravity.
This means that the compact nugget of dark matter will be sucked into the center of earth by earth gravity because our familiar ordinary matter on earth cannot support and hold the the compact nugget of dark matter at the location of a mystery spot (or a gravity hill).

28. Dark Matter based Theory and Model for Mystery Spots and Gravity Hills - 2
Therefore, the small and compact nugget of dark matter is not a solid rigid nugget
The composition of the compact nugget of dark matter is constantly changing because of a down-going stream and an up-coming stream of dark matter.

29. Dark Matter based Theory and Model - 3
The compact nugget of dark matter is supported by two streams of dark matters
One stream is being sucked from the compact nugget into center of earth by earth gravity, then over-shoots and keeps going into a conjugate point on opposite side of earth surface
The second stream is also being sucked by earth gravity and is returning from the conjugate point through earth center, then back to the original location of the gravity hill (or the mystery spot).

30. Dark Matter based Theory and Model - 4
The composition of the compact nugget of dark matter on earth surface is constantly changing because of these two streams of dark matter.
These streams of dark matter are oscillating through earth center and between the original location of a gravity hill (or a mystery spot) and its conjugate point on the opposite side of earth surface.
In other words, dark matters are trapped and oscillating in the gravity well of the earth.

31. Dark Matter’s Gravity Anchor on Earth
Dark matter’s gravity anchor on earth is described on my web page at:
With such gravity anchor, these dark matter nuggets are rotating in sync with earth around earth axis and orbiting the sun such that the location of a compact nugget of dark matter is fixed at a given location of a mystery spot (or a gravity hill) on the earth.

32. Methods to Test Validity of this Model
Several methods may be used to test the validity of this Model as described in my web page at:

33. My Explanation for Great Mystery of Change in Height
Two contributing factors:
Significant Abnormal Gravity as the main factor
Difference in Strengths of Abnormal Gravity at Those Two Standing Positions
Tilted Ground
Carpenter (Bubble) Level cannot show level ground correctly when the local gravity is abnormal

34. Location Dependence of Abnormal Gravity as the Main Contributing Factor
The two standing positions of the two demonstrators have very different distances to that small and compact nugget of dark matter with extreme high mass density
The strengths of abnormal gravity are very different at the two standing positions because of different distance to the small and compact nugget of dark matter with extreme high mass density
Such change in strength in abnormal gravity is the main contributing factor to the demonstration of change in height when the two persons switch their standing positions

35. Tilted Ground as the Minor Contributing Factor to the Mystery of Height Change
The gravity in the Mystery Spot is not normal.
The liquid bubble in Carpenter Level cannot tell if the ground is level or not because of abnormal gravity in the Mystery Spot
The tilted ground is one of the two factors causing the relative heights of the two persons to change substantially when the two persons switch their standing positions

36. More detailed information for this set of PowerPoint Presentations are on my three web pages at: