Waymark commonly refers to navigation aids in outdoor activities like hiking, not in urban areas. Check the next waymark to ensure we're still on the right hiking path.
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Not Always Physical
A waymark can be a metaphor for guidance in life or projects, not just a physical sign. His mentor's advice acted as a waymark for his difficult career choices.
Pro Tip 3/3
Historical Use
Waymarks have been used historically before modern navigation tools were developed. Ancient travelers left stone waymarks to aid those who would follow them.