The Tay Con Linh massif rises between the Chay and Lo river systems. Its upper slopes hold cloud forest and alpine scrub, while its southern flanks drop through Red Dao and Hmong farmland into the Cao Bo tea valley.
Chieu Lau Thi, also called Kieu Lieu Ti on some maps, marks the highest point most trekkers reach: 2,402 m on the eastern shoulder. The true summit at 2,427 m sits above technical ground and is not part of our routes.
Temperatures fall roughly 6 °C per 1,000 m of ascent. A warm valley morning can become a 2 – 5 °C shelter night. Even in shoulder season, rain gear and warm layers are essential.