A snapshot from the sequence:

A snapshot from the sequence:

The black lava flowing from the volcano Cumbre Vieja in the Canary Islands gave me the idea for this animated sequence, based on real shots ... having nothing to do with a volcanic eruption.
Three snapshots from the animated sequence:



A sequence based on only four graphic elements, and full of light and transparency.
A snapshot from the sequence highlighting its four basic graphic elements: a blue-purple background, a black curved line, and two yellow and green dots, respectively.

The movements are quite long in the sequence; they appear here separately to make them easier to watch.
first movement, which gives its title to the whole sequence: why this black triangle at the top left of the image? ... simply because it is the edge of the plane window from which the sun and clouds were filmed during a landing at Bari airport in June 2021.
second movement:
third movement:
... and for those who have the patience to watch the fourteen minutes of the complete sequence:
Two snapshots from the first two movements of the animated sequence:


and the ten digital compositions that appear in whole or in part in the third movement:
A fairly short sequence, but designed with a lot of linear drawings, all made "by hand"...