Sharp, thin charcoal pencil has been used as the form of the image is sharp and not lost. Heavily pigmented areas have used layering and pressure to a chi eve this. Smudging and blending is evident with raw paper, fingerprints can be seen.
Hardness Levels Infographic: Comparing Exotic and Domestic Lumber for Wood Flooring– When it comes to lumber type, there are varying levels of hardness. Here is an infographic that compares a range of wood species by hardness.
Gers are traditional Mongolian homes and have been in Ulaanbaatar since the century, easily portable rounded wooden structures covered by a heavy felt blanket and heated by a stove in the center of the structure.