A substitute for climbing chalk which is produced from pine resin. Popular in Fontainebleau but discouraged (or actively forbidden) almost everywhere else because it deposits a thick, shiny resin layer around the rock and friction can only be achieved through the use of far more pof. To belay from a https://sewing-machine-repair-bou98308.bloggazzo.com/1731656/considerations-to-know-about-boulder-sewing-machine-repair