Twyfelfontein
... that the rock engravings at Twyfelfontein are Namibia's only World Heritage Site?
... that the <a href="./Petroglyph" id="mwEQ4" rel="mw:WikiLink" title="Petroglyph">rock engravings</a> at <b id="mwEQ8"><a href="./Twyfelfontein" id="mwERA" rel="mw:WikiLink" title="Twyfelfontein">Twyfelfontein</a></b> <i id="mwERE">("Lion Plate" pictured)</i> are <a href="./Namibia" id="mwERI" rel="mw:WikiLink" title="Namibia">Namibia</a>'s only <a href="./World_Heritage_Site" id="mwERM" rel="mw:WikiLink" title="World Heritage Site">World Heritage Site</a>?