Also means
auf dem Holzweg sein: to be on the wrong track
Usage Note
Holzweg literally is a forest track used to haul timber — it leads nowhere useful for a traveller (it dead-ends at a logging site). Hence the idiom auf dem Holzweg sein (to be on the wrong track/completely mistaken), which is far more common than the literal sense in modern German.
Examples
"Mit dieser Annahme bist du völlig auf dem Holzweg."
Natural Translation
You're completely on the wrong track with that assumption.
Literal Translation
With this assumption you are completely on the logging-track.
Related Words
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