The Tyra Road connects the Catherdal Road to the Moy Road. Tyra is a Gaelic name meaning "land" from Terra. Terra firma is a Latin phrase meaning "solid earth" (from terra, meaning "earth", and firma, meaning "solid"). The phrase refers to the dry land mass on the earth's surface and is used to differentiate from the sea or air. Across the road from the cache is the remains of part of the old railway embankment. A bridge originally spanned the road but there are almost not visible signs of it now.
The cache is a test tube and parking is beside the cache but do pull in off the road at the junction. As it is a busy junction i have had the hint fairly obvious. Please replace out of sight.