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Intelligent Lifeform Index

Four Letter Code YASH
Federation Status Believed Extinct
Planet of Origin Pigera IV
Encountered TNG: The Chase
T/E Rating T0/E0
Current Tech Level E-
List of Named Yash-Els

Full ILI GalleryPermitted Species Gallery

REV 239401.31
Extinct Species Notice

attention: This species is

believed extinct

Available data is limited


"May your day be as blessed as yesterday."
a Yash-El saying.
The Yash-El are a species who evolved on a planet of extremes. On the one hand it was a tropical paradise and on the other the entire surface of the planet was covered by active and dormant volcanoes. Normally this was not an issue but eventually a series of the larger ones erupted destroying all life on the planet.

Home System

  • Quadrant: Alpha
  • Location: Betreka Sector (coordinates A24-0001-1296)
  • Proper Name: Pigera Sigma System
  • Star: It orbits a class M (Red) star
  • Distance from Star: its orbit is approximately 39 million km
  • Companions: It is the 4th of 8 planets in the system
  • Moons: it has 5 moons.

Home World

  • Proper Name: Pigera IV
  • Diameter: 17,016 km (10,573 miles)
  • Gravity: 0.90 standard gravity with a density of 3.7
  • Axial Tilt: 6.3%, with minimal seasonal changes
  • Orbital Period: 371 days
  • Rotational Period: 25.1 hours
  • Classification: M
  • Surface Water: 59%
  • Atmosphere: 0.98% is a standard pressure with 63% nitrogen, 21% oxygen, 16% trace chemicals
  • Climate: Originally it was a tropical and semi-tropical planet. Now it is a lifeless rockball with a toxic atmosphere.
  • Terrain: Numerous active volcanoes
  • Population: Currently none as they are believed to be extinct.


Their world was a tropical paradise, one with many active volcanoes. Life was easy, everyone lived in harmony with the world around them and they developed at a very slow but fairly steady pace.

Around 2125 the volcanoes started to produce more toxic gases and spewing trace chemicals into the atmosphere. As a result the climate started to slowly get warmer.

Between 2187 and 2236 there was a dramatic increase in volcanic activity that resulted in close to 20 shrines having to be abandoned. Over 5 times that many communities also had to be abandoned during this time.

By 2227 there were the first stirrings of unstable tectonic plates that resulted in a slow but steady increase in both earthquake activity and severity.

In 2242 they established communication with the Rodulan which eventually resulted in contact in 2244.

In 2258 the volcanoes and earthquake activity started to decrease and by 2283 everything seemed to have returned to normal pre-2125 conditions other than a noticeable planet wide temperature increase as a result of the greenhouse affect caused by the dramatic increase in toxic and trace chemicals in the atmosphere.

In 2313 one of the largest volcanoes on the planet erupted with out warning, followed by 5 more within a 28 hour period. This was accompanied by numerous devastating earthquakes and the sudden appearance of more than 20 new volcanoes. The atmosphere was flooded by ash. So much that it blanketed the entire world. People, plants and all other forms of life were killed off. It was the end of all life on Pigera IV.


They had a central unified government comprised of a council of elders. Each and every community on the planet would elect one elder. That individuals name would be submitted and then 21 names would be drawn randomly.


They are completely hairless with a large head, deep set, dark black eyes and a pale pinkish complexion due to the constant sun exposure. They tended to wear very light clothes with the men wearing a short skirt and the women a kind of sarong style dress.


As with most intelligent humanoid species they had a very complex system with specialized organs, and unique hormones, chemicals and enzymes. Due to the environmental factors they seemed to have been a very healthy people with very few natural medical issues and most of those were viral or bacterial and they had an excellent medical healthy system.


They had a fairly stress free existence and tended to be very friendly. As a species they spent a lot of time in relaxation, enjoying each others company and laughing and playing. As a result they had few recorded cases of mental instability except in those of advanced age. These individuals were very well cared for and treated in an extremely human fashion.


As a result of the numerous active volcanoes on this world the Yash-El developed a unique belief that the spirit of their planet could be communicated with by praying at and offering gifts to the molten magma of the active volcanoes.

Because of this every active volcano had a large flat platform built around the lip of the volcano complete with stone benches for individuals to sit down after making the long hard climb up. No technology of any kind was permitted any where near these shrines.


They believed that their world and all life on it was created by the spirit of their world. This belief and numerous tales, legends and myths claimed that volcanoes created the land, the atmosphere and all living things, that they were ejected from the center of the world by the world spirit to flourish and multiply.


They had a very peaceful society with very little crime, almost no poverty and plenty of food. The climate was warm, life was easy and the world was good to them. They built their communities to blend into the environment and took great pains to make sure that they did not pollute the earth spirits world.


Large carvings in stone and wood were common all over the planet as was the use of water to create fountains and water falls. Exotic flowers were cultivated and planted everywhere, the colors a rich explosion to be enjoyed by all. Singing and dancing with lots of drums and some melodious wind instruments could usually be heard every night as each community celebrated the end of each day.


They would end each day with a celebration that included singing and dancing by most members of every community. These celebrations would end with a night blessing they called "Dream not of today".


They had achieved a level of technology that would have allowed them to build space craft but they never did. They did launch numerous satellites and probes that allowed them to learn more about the universe around them. It also allowed them to make contact with other species.


They had a healthy economy that did not require them to establish off world trade. However they did ship numerous exotic foods, plants and fauna. They imported exotic cloths and other basic materials.


They had none and never developed any. Their world had no strategic value, was off the main trade routes and all of its raw resources was of poor quality and needed extensive purification before it was of any value.

Federation Intelligence Files

The Yash-El are believed to be an extinct species and were wiped out by the 24th century.

The night blessing of the Yash-El was "Dream not of today". At Starfleet Academy, Captain Jean-Luc Picard missed this question in the final archaeology exam.


Both Memory Alpha an Memory Beta were used as references as well as the TV episode, TNG: The Chase.


This file was updated and approved by the SDC on 26 May 2014.

Content from this article may have
come partially, or entirely from
Memory Alpha

This profile was revised by the Species Development Committee.
REV 239401.31
Please add any new information discovered during the course of a mission or shore leave.