In Belarus lynxes quite often visit road pipes. In the warm season they mainly use road pipes without running water. In winter, when water is covered with ice, almost all pipes that are large enough are in lynx usage.
We tried to investigate this phenomenon and found four different purposes of lynxes to come to a road pipe. First, a road pipe it is something visually outstanding in the habitat structure at forest road. Such remarkable spots are marked by carnivores, including lynxes. Snowtracking data suggest that about 90% of visits of road pipes by lynxes (more than two hundreds cases were registered) was, at least, partly for territorial marking.
Also, we noticed that approximately in 60% of the registered cases lynxes were walking, hidden in the road-forest ecotone, then they entered the road pipes and suddenly (suddenly for the possible prey) appeared on the opposite side of the road. Once the lynx killed a roe deer at the opposite side of the road close to the pipe entrance. Another time a raccoon dog was killed by lynx with such a manner. So, passing road pipe by lynx has also a hunting sense.
During rainy weather or wet snow cover a lynx, while entering a road pipe, shake up and sometimes roll to dry the wet fur (17 registrations), and sometimes they rest inside (5 registrations, at least). Two of the five resting (may be hunt-watching at the same time) continued quite long, for approximately 7 and 11 hours. Being inside road pipe lynxes couched on some substratum inside (sand, dry remains of vegetation).