This example is from Wikipedia and will be reused beneath a CC BY-SA license. They are often sculpted into numerous styles through this process, in some cases leading to deep thumb-print like indentations on their own surfaces referred to as regmaglypts. From Wikipedia References in periodicals archive ? Sculpted from https://sculpted-md-lakewood19477.wizzardsblog.com/36372427/the-ultimate-guide-to-sculpted-md-lakewood