are 2 businesses in this sector. 12 people are employed in the tertiary sector, with 2 businesses in this sector. The historical population is given in the following table: Languages Most of the population () speaks Rhaeto-Romance (82.3%), with the rest speaking German (17.7%) In the valley, the Romansh speaking population speaks the Jauer dialect. In 1910 about 90% of the population spoke Romansh, in 1941 it was 96% and in 1970 it was 94%. In 1990 98% understood Romansh even if wasn't their first language and in 2000 it was 87%. Tourism There is a small car parking in the village. A number of hiking trails start here, up the hills or down to the valley in summer and winter. In fall 2009 - the International Year of Astronomy - a public observatory Alpine Astrovillage Lü-Stailas was inaugurated. The Center is equipped with robotic telescopes for direct observations as well as for astrophotography. The equipment is also used in introductory courses for beginning amateur astronomers. The Astrovillage is located on a terrace at an elevation of and has favorable geographical and meteorological conditions for astronomy. References External links Alpine Astro Village Val Müstair Former municipalities of Graubünden