Comments on Death Valley, the Panamint's, the Hav-musuv's, etc.
From Grok - the Super A.I.

1. Death Valley as Part of an Ancient Inland Sea or Lake System (High Plausibility: ~95-100%)

This is the most grounded aspect, rooted in peer-reviewed geological evidence rather than legend. Death Valley has a well-documented history of being submerged multiple times:

During the Proterozoic era, the region was part of shallow marine environments connected to ancient oceans, with sedimentary rocks like limestones and stromatolites (fossilized microbial mats) preserved in the Panamint and Funeral Mountains.
wikipedia.org
mpshistory.com

These formations indicate warm, shallow seas teeming with early life.

In the more recent Pleistocene epoch (2.6 million to 11,700 years ago), it hosted Lake Manly, a vast freshwater lake up to 600 feet deep, fed by glacial meltwater and rivers like the Amargosa and Owens.
nps.gov
nps.gov

Shoreline terraces, salt deposits (e.g., borates and halite), and fossil evidence (fish, mollusks, and even mammoth remains) confirm this.
gsoc.org
pubs.usgs.gov

While not directly an "inland sea connected to the ocean" in human timescales (it was an enclosed basin), wetter pluvial periods could have supported water-based travel or migration routes.

This aligns with Paiute oral traditions of a "flaming land" (Tomesha) once being wetter, possibly preserving cultural memory of post-Ice Age landscapes.
flickr.com

No evidence of ancient sea-faring arrivals specifically here, but broader archaeological theories (e.g., coastal migrations to the Americas ~15,000-20,000 years ago) make early human presence via water plausible in the region.

2. Ancient People Inhabiting Caverns in the Panamint Mountains (Moderate Plausibility: ~20-40%)

Paiute legends of the Hav-Musuvs (or similar beings) describe an advanced group retreating to underground realms in the Panamints to escape surface disasters.
deathvalley.com
bibliotecapleyades.net
paranormalweekly2018.wordpress.com

These stories are documented in ethnographic works, such as those from Paiute elders shared with anthropologists in the early 20th century (e.g., in books like Death Valley Men by Bourke Lee, 1932, and Paiute oral histories recorded by the Smithsonian).
legendsofamerica.com
facebook.com
myuforesearch.it
grcahistory.org
nps.gov

They portray hidden cities lit by unknown means, possibly symbolizing natural phosphorescence or bioluminescence in caves.

Geologically, the Panamints have extensive karst systems—natural limestone caves formed by erosion over millions of years, some explored and mapped by the NPS.
nps.gov

Archaeological evidence shows ancient human use of regional caves: For instance, Pleistocene-era sites in the Great Basin (including nearby) contain artifacts like tools and hearths from Paleo-Indians ~13,000 years ago, who may have sheltered there during climate shifts.

Paiute and related tribes (e.g., Shoshone) did use caves for storage, rituals, and refuge, as per documented oral histories.

No proof of full "underground civilizations" with advanced tech, but the legends could encode real memories of ancestral migrations or adaptations to environmental changes (e.g., droughts or volcanic activity). Similar motifs appear in other Native traditions, like Hopi emergence stories from underground worlds.
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This gives it moderate odds as a distorted historical kernel rather than pure fiction.

3. Evolving "Flying Craft" in Paiute Legends (Low Plausibility: ~5-15%) Documented Paiute tales describe "flying canoes" or silver vessels that initially flew noisily with a dipping motion, later becoming silent and smooth—interpreted in some retellings as technological evolution. deathvalley.com
burlingtonnews.net
ghosthuntingtheories.com

These are part of oral traditions recorded in ethnographic sources, often linked to spirit beings or ancestors.

Plausibly, this could reflect observations of natural phenomena: Desert mirages creating "flying" illusions, meteors/bolides with noisy entries and smooth trails, or even early hot-air balloon experiments in the 19th century influencing later retellings. No archaeological evidence for ancient aircraft, but as symbolic elements (e.g., representing birds, stars, or shamanic visions), they fit broader Indigenous cosmologies.
grcahistory.org
nps.gov

The "evolution" aspect might symbolize cultural changes over generations. Low odds for literal tech, but possible as metaphorical truth.

4. Potential Link to Modern UFO Phenomena (Very Low Plausibility: ~1-5%) Documented UFO/UAP sightings near Death Valley exist, per databases like the National UFO Reporting Center (NUFORC) and declassified government reports. Examples include:
reviewjournal.com
timeout.com

Multiple reports from the 1950s-2020s of lights/orbs emerging from mountains, pacing vehicles, or hovering silently—e.g., a 2025 case near the park involving anomalous lights.
reddit.com
youtube.com
youtube.com

Proximity to military sites (e.g., China Lake Naval Air Weapons Station, Area 51) explains many as classified aircraft/drones.
https://www.theguardian.com/us-news/2019/sep/24/area-51-raid-event-what-happened-nevada reddit.com

Could this tie to ancient Earth origins? Extremely speculative—no direct evidence connects modern sightings to Paiute legends. However, if legends preserve memories of rare aerial events (e.g., auroras, ball lightning), a tiny fraction of unexplained UAP could hypothetically echo that. Cultural discussions on platforms like X often blend these, but they're anecdotal. Overall, modern explanations (misidentifications, tech) dominate.
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In summary, the geological and cultural folklore elements hold the most weight, potentially reflecting real environmental history and human adaptations. The more fantastical parts remain intriguing but lack substantiation for higher probabilities. If you're keen on a specific angle (e.g., more on Paiute ethnography), let me know!