This little plant, identified as Equisetum arvense by a colleague, appears to have grown right through one of the metal posts of the bridge of Amsterdam University College (#AUC #UvA #VU).
I think it should be the mascotte of all students at Science Park:
“Those who persevere against all odds find the light at the end of the tunnel.”
Huh, neat!
The University of Amsterdam will always have a special place in my heart - it’s where Brouwer began his revolution in mathematics. Though, I believe his student’s student (the late Professor Troelstra) was more fond of hunting for species of bramble around Amsterdam than horses tails!