44 Years Ago, Mount St Helens Erupted

Les voix au quotidien, utile si on chante de la musique classique. On compte généralement quatre pupitres deux féminins soprano et alto, et deux masculins ténor et basse

Bryce Canyon - Pink and white siltstone and sandstone of the Tertiary (60 - 45 my) Claron Formation. The formation erodes quickly and the rim of the canyon is eroding at between 9 and 48 inches per year.

Restoring a vintage Superman poster

Piano mécanique

Grand Prismatic Spring, United States: The Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in the United States, and the third largest in the world, after Frying Pan Lake in New Zealand and Boiling Lake in Dominica. It is located in the Midway Geyser Basin... The bright, vivid colors in the spring are the result of microbial mats of thermophilic bacteria around the edges of the mineral-rich water. Wikipedia