For decades the prevailing narrative regarding Unidentified Anomalous Phenomena (UAP) focused exclusively on the Extraterrestrial Hypothesis (ETH). We looked to the stars, scanning the constellations of Andromeda and Zeta Reticuli for signals. However, since the landmark publication by Harvard researchers in 2024 and the subsequent disclosure events of late 2025, the scientific community has been forced to look down rather than up. The Cryptoterrestrial Hypothesis (CTH) suggests that the “visitors” are not visitors at all but original residents of Earth. Specifically, the subset known as CTH-2 has gained traction as geological scans reveal anomalies deep within the crust.
→ Defining CTH-2: The Remnant Hominid
The Harvard paper, originally authored by Tim Lomas, Brendan Case and Michael Paul Masters, categorized potential concealed earthly species into four distinct buckets. CTH-2 specifically addresses the “Hominid or Therapsid Cryptoterrestrials.” Unlike CTH-1, which posits a technologically advanced ancient human civilization (think Atlantis), CTH-2 suggests a non-human terrestrial animal that evolved to high intelligence and technological capability long before Homo sapiens dominated the surface. The theory proposes that these beings, perhaps divergent cousins of early hominids or even evolved therapsids, sought refuge underground to escape cataclysmic surface events.
→ The Underground Evidence
In the wake of recent whistleblower testimonies, the focus has shifted to “transmedium” travel—not just air-to-sea but air-to-ground. The notion of hollowed-out subterranean pockets is no longer pure science fiction. Recent seismic tomography and ground-penetrating radar near volcanic hotspots like Mount Hayes and the Andes have identified vast, honeycombed structures that defy natural geological formation. These locations coincide with centuries of lore regarding “little people” or subterranean gods. The CTH-2 hypothesis aligns with the physical descriptions of certain UAP occupants: smaller statures, large eyes adapted to low-light environments and a distinct genetic divergence from the standard Grey archetype.
→ Why Stay Hidden?
If a remnant hominid species possesses technology superior to our own, why remain in the shadows? The answer likely lies in resource management and survival. A species that witnessed the cyclical destruction of surface life—via asteroids, ice ages or solar flares—would view concealment as the ultimate survival strategy. Their interactions with us, ranging from the “foo fighters” of WWII to the Tic Tac UFO encounters, may be reconnaissance rather than diplomatic engagement. They are monitoring the surface tenants who are currently destabilizing the planetary ecosystem.
→ Implications for Disclosure
Accepting CTH-2 changes the psychological landscape of Disclosure. We are not dealing with distant travelers from the Pleiades or the Hyades star cluster who can leave if they choose. We are dealing with co-inhabitants who share our biosphere. This realization complicates the geopolitical narrative, as it implies territorial disputes are not just horizontal across nations but vertical through the crust. As we move further into 2026, the question is no longer “Are we alone?” but rather “Who lives downstairs?“
