Tree tunnels can be pretty spectacular. Lots of cities used to have American elm tree tunnels lining residential streets. And in the tropics, rain forest vegetation often makes tunnels out of trails by closing in over your head, and this can be pretty exciting at night when bats use these tunnels as flyways. Of course, ornamental tunnels are amazing sites too. One of TPPs favorites is a tunnel of golden chain trees (Laburnum) as shown here. A colleague started all of this with sending me the link to this pictorial of the 10 prettiest tree tunnels. TPP has personally seen only one of the 10; guess which one. Which one is your favorite? Even our estate is too small for a tunnel, but TPP is thinking of a golden chain tree gate.
How to calculate trigonometry functions
3 hours ago in Doc Madhattan