This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Lswr map . transport map Map of SWR system at Transferred from org en transferred to Commons by User Oxyman using de php CommonsHelper Original uploader was Afterbrunel at org en Released into the public domain by the author en Afterbrunel original upload log page en Lswrmap Afterbrunel bytes no of SWR system