The ancient Wewah civilization (alternate spelling "Uiua") left mysterious runes carved inside a cave. Archeologist have not been able to interpret the inscription but they have made progress decoding a few of the glyphs. Some glyphs appear to be numbers but it not clear whether the Wewah used decimal notation or some other number base. Some glyphs have similar appearance to modern mathematical symbols but it is not certain if the Wewah used them in the same way.
The following glyphs are interpreted as numbers:
၁ ← 1
๓ ← 3
४ ← 4
६ ← 6
𑇨 ← 8
The following is the inscription that was left:
⊂⊡၁.⊂⊡๓.⊂⊡६.⊂⊡¯๓.⊂⊡၁.⇡++၁๓६
⊂⊡-६४.⊂⊡¯๓.⊂⊟.⊡¯+၁𑇨.⊂⊡-६४.
↘¯+६४⊂⊡-𑇨၁.⊂⊡¯६.⊂⊙⊂.⊡४.⊂⊡¯𑇨.
The cache is not at the posted coordinates but the Wewah knew where it was hidden. If you don't see some of the glyphs above, use the attached image.