Waves and Time is a spiral land art dug into the grass by Chris Drury in 2011.
It lies at the junction of dry valleys/dales of the sort that are common in this area of the wolds.
Whilst I wouldn't claim this to be a must-see attraction, it is a point of interest for this pretty dale. You can walk on it (though it was a bit overgrown in early September at the end of the Summer growth) and nearby the Yorkshire Wolds Way climbs out of the valley on the eastern side, allowing elevated views of both the dale and Waves and Time.
We approached from Thixendale village where there is ample free street parking. From there Waves and Time is a quiet 2km walk south along the flat Yorkshire Wolds Way, so well defined. The first few hundred metres are on a quiet country road, but then you turn onto a footpath through the dale. Its a pretty route (without being stunning).
At Waves and Time we followed the Yorkshire Wolds Way up and out of the dale to Huggate Hill road, and followed that quiet country road back to the village, for some more elevated views.
Waves and Time could also be approached from Fridaythorpe along the Yorkshire Wolds Way or from the Stone Dale picnic area car park near Garrowby Hill on the A166.
On our return to Thixendale, we took a short detour up the wide path/farm road that forms part of the Yorkshire Wolds Way at the western end of the village to get pretty views over the village and other dry valleys.