Egypt
Egypt became one of the earliest and most enduring subjects of Ingo's exploratory research. The surviving archives reveal how his investigations at Giza evolved through field observations, structured perceptual sessions, and collaborations that bridged archaeology, geophysics, and consciousness studies.
Planets
Across the 1970s and into the 1980s, Ingo conducted a series of perceptual probings of planetary environments, exploring whether consciousness could access locations far beyond Earth.
UFOs/UAPs
Ingo described encounters with unidentified phenomena as experiences that interact with perception itself. His accounts suggest a complex relationship between observation, environment, and awareness, often extending beyond conventional expectations.
Non Human Entities
Among the more unusual themes found in Ingo's papers are accounts of encounters with non-human intelligences. Rather than seeking them, he regarded such experiences as unpredictable byproducts of exploring the limits of perception and awareness.