Skilifts are, like in real world, automated machines that help people to get from bottom to the top of a skilift.
Currently, there are not many skilines, since there are not many snow-covered places (see Snow & Snowlands).
Sansara has two skilifts, described at Snowlands Subcontinent.
Sharp Continent has two skilifts, described at Mountains Of Sharp Continent.
In private-owned sims, skilifts are rare. The only one found by Second Life Geography team is in Austria Microcontinent, at the end of German Railway.
Second Life Geography