Other Humanoid · El Yunque, Puerto Rico · 1968
UNI-1968ID case-ef27453828Added to map Oct 14, 2026
- Creature
- Other Humanoid
- When
- Jul 1968to the month
- Where
- El Yunque, Puerto Ricoto approximate level
- Reports
- 1 document1 independent
The account
A group of hikers reports encountering a green-skinned humanoid with an oddly-shaped head and long arms in a river.
See the source ↓ one document so far, so there is no trail to follow yet
We map claims, not creatures: this is what the sources say, not proof. How a case is built
Details
- Creature
- Other Humanoid
- Where
- El Yunque, Mameyes II, Río Grande, Puerto Rico, 00738, United States
mapped to approximate level · from the report's own words, generalized to a larger area - When
- Jul 1968
- Account
- Not first-hand (retold or reported by someone else)
- Backed by
- 1 independent source
- Added to map
- Oct 14, 2026
- Case id
- case-ef27453828
Place lookups use data © OpenStreetMap contributors (ODbL), via Nominatim. All credits
Source trail (1)
Every link goes to where we found the account. The earliest we found is marked; it is the earliest found, not necessarily the original.
- Missing Time with Aliens: Twelve Astonishing Cases
Reddit · 2025-07-26
Earliest found, not necessarily the original.
Further reading
- On the Track of Unknown Animals, Bernard Heuvelmans (1959)
The founding work of cryptozoology.
Borrow on Internet Archive - Cryptozoology A to Z, Loren Coleman and Jerome Clark (1999)
Encyclopedia of reported creatures.
Borrow on Internet Archive - Abominable Science!, Daniel Loxton and Donald Prothero (2013)
Skeptical history of the Yeti, Nessie and others.
Borrow on Internet Archive - In Search of Prehistoric Survivors, Karl Shuker (1995)
Borrow on Internet Archive
Books we have not reproduced: borrow them free at archive.org. Listing a book is not an endorsement of its claims.