You are standing on part of the old Beaudesert-Beenleigh rail line.
The line was in use from 1885 until 1996. If you follow the line to the North for 100m or so, you'll see a signal light, which is still illuminated today!
The cache is small, so bring your own pen. No real room for swappables. Watch out for muggles!!
Congrats to Spellzen on FTF!