If there was any sort of Cataclysm. It would have had to have been far, far, far earlier than the 19th century. Probably would need to predate the Colonies and settlement of the U.S by a wide margin at minimum.

Or we’d have extensive records and primary sources. Personal Journals, Family Archives etc. There’d be far too much for any 19th century operation to scrub in the event of an attempt at launching a coverup.

Not to mention. You’d have to get all the various native tribes on board as well. To all conveniently ignore such an event in their oral histories

Pictures on their own also aren’t proof anymore. With the amount of AI image generators out as well. Anyone with a narrative to sell can create convincing ’Proof’.

You could potentially argue Quantum Physics jumping Timelines or something for the utter lack of any records. But that seems like a cop out.

I remember that earthquake in Kobe, Japan. Liquefaction, some buildings actually sank. I wonder is this what happened. The official narrative is a children’s story.

TLDR: A city planning project in Pittsburgh, PA from 1800s - early 1900s, known as "Hump Cut" shaved 60 feet off the hill and allowed the street to be repaved and widened. Most of the buildings revealed underground doors and windows, completed ornate foundations obviously constructed above ground. So where did 60 ft of earth come from, when, and how?

WIKI HISTORY: Grant Street was named after British Major General James Grant, who was defeated by the French at that location during the French and Indian War. The street's location on "Grant's Hill" strangled growth in downtown Pittsburgh, leading to several attempts in 1836 and 1849 to regrade the area to remove the hill. The successful removal of the hill in 1912 cost $800,000. For example, the project removed 16 feet of hill near the Allegheny County Courthouse, meaning that the former basement became the modern ground level.

FROM JARID BOOSTERS: In the late 19th and early 20th centuries architecture was shifting dramatically. Fueled by the Industrial Age, the ancient brick and masonry structures of Old World origins were systematically replaced with cold, modern steel. However, more often than not, the entire city itself was renovated, revealing numerous unexpected findings during these excavations.

In Pittsburgh, Pennsylvania we have an event seen as the final removal of the massive “Grant’s Mound”, a historically significant “hill” which played a key role in the founding of Pittsburgh. Grant’s Mound, and the street level surrounding its ancient buildings, was lowered by a total of 33 feet, beginning with the “First Cut” in 1836, and concluding with the “Final Cut” of 1912 and 1913, which is the focus of our photographic evidence today.

These images showcase numerous anomalies that only became visible due to the excavations, with the most unexplainable being dozens of structures with foundations running 30 feet (or more) below the original surface of the mound. Even stranger, upon excavations these once-buried levels sometimes contained things like windows, doorways to the outside, ornate brickwork, and even statues - appearing to indicate that these “foundation” layers were not always meant to be underground.

I have a number of those "hump" excavation photos that I downloaded from somewhere years ago. They are clearer than the ones in the video.

The 1811–1812 New Madrid earthquakes caused significant disturbance and minor damage to cities on the East Coast, though the primary destruction occurred in the Midwest.

Widespread Sensation: Shaking was felt in major East Coast cities including New York City, Washington, D.C., Boston, and Charleston, South Carolina, with reports of church bells ringing in Boston and pavement cracking in Charleston. Structural Impact: While no major structural collapses were reported in the East compared to the Midwest, the shaking was severe enough to ring church bells in Boston, topple chimneys in Cincinnati, and cause furniture to crash in the nation's capital. Geological Context: Because the eastern United States has fewer active faults to interrupt seismic waves, vibrations from these magnitude 7.5–9.0 earthquakes traveled thousands of miles, affecting an area of roughly 965,000 square miles. Although the East Coast experienced intense shaking that frightened residents and caused minor structural issues like broken chimneys, the principal damage to log cabins, chimneys, and landscape changes was concentrated in the Mississippi Valley and states like Arkansas, Missouri, and Tennessee.

Here's what Grok has to say about the "hump cut":

The "Hump Cut" (also called the "hump removal" or leveling of Grant's Hill) was a major public works project in downtown Pittsburgh, Pennsylvania, that took place primarily between 1912 and 1913 (with planning starting in 1909 and completion extending into 1914).

historicpittsburgh.org

Background and Purpose

Grant's Hill—nicknamed "The Hump"—was a natural terrain rise in the downtown area (roughly between Diamond and Sixth Streets, affecting streets like Grant, Oliver, Fifth, Sixth, Webster, and Wylie Avenues). It had long hindered transportation, commerce, and urban growth due to its steep gradients, which were difficult for horses, trolleys, vehicles, and pedestrians. Earlier grading efforts had already reduced it:

1. A ~10-foot cut in 1836.

2. A ~7-foot cut in 1849/1850.

By the early 1900s, the remaining "hump" (up to about 16 feet in places) was still a nuisance. The 1912–1913 project removed this final portion, flattening the area and reshaping downtown topography.

facebook.com

Execution and Impact

Scale: The project involved extensive excavation using steam shovels and other equipment. It lowered street levels significantly (e.g., up to 16.3 feet at Wylie Street near the Allegheny County Courthouse). Many buildings required foundation adjustments, new entrances, or ground-floor remodels to match the new street grades. Some structures were damaged during the work but often improved afterward.

Cost: The city spent around $800,000 directly on the cut, plus millions more in property damages and related costs (estimates in contemporary reports varied and could reach higher figures when including broader impacts).

Benefits: It greatly eased travel and development in the constrained downtown area (bounded by rivers and the hill). Streets became more level and usable. Reuse of Material: Excavated earth and stone helped fill St. Pierre's Ravine in Oakland, creating land for Schenley Plaza (now home to parts of the University of Pittsburgh, including the Frick Fine Arts Building). A stone arch bridge (Bellefield Bridge) was buried in place during the filling.

brooklineconnection.com

Notable landmarks affected include the Frick Building (whose pillars and entrance were adjusted) and areas near the Allegheny County Courthouse.

Historical Context and Legacy

The project aligned with Pittsburgh's early 20th-century efforts to modernize infrastructure, influenced by figures like Mayor William Magee and recommendations from planners such as Frederick Law Olmsted. It was documented extensively through city photographer glass-plate negatives, many of which survive in archives like Historic Pittsburgh (University of Pittsburgh Library System). These show excavation scenes, steam shovels at work, and before/after street views.

Today, the flattened landscape is the norm in downtown Pittsburgh, but traces remain visible in altered building foundations and historical photos comparing old and new street levels (e.g., along Fifth Avenue from Grant Street). The "Hump" is a classic example of how cities reshaped natural topography for growth.

Some fringe online discussions link the project to "mudflood" or "Tartarian" theories (claiming it hid older buried structures), but mainstream historical accounts treat it straightforwardly as a practical grading and infrastructure improvement effort with clear documentation from the era.

For visuals and primary sources, check collections at HistoricPittsburgh.org or BrooklineConnection.com, which include period photos of the excavation and street-level changes.