It appears that two days into their 3-day hard rock Calling Festival, they were unwilling to risk sanction by over-running.
Here it is covered by only a thin layer of soil, hard rock being close to the surface.
Here he may have learned that the coney makes its dwelling in the hard rock.
If such accumulations gather and are changed into hard rock by pressure and other indurating agencies they make typical breccias.
For, as my right hand touched it, the hard rock moved, shivered.
It is not a hard rock, this island granite, and is easily worn away by the action of the wind and water.
Some of these were still open, where they had been driven through the hard rock.
The cliffs of hard rock offer far more resistance than the soft alluvia over which the river wanders freely.
They have been badly battered out of all shape by striking on this hard rock.
These in their turn rest upon a foundation of hard rock, harder than any we have yet examined, called Millstone Grit or Gritstone.
A form of rock-and-roll music with a simple, driving beat, usually played on heavily amplified guitars (1960s+ Rock and roll)
Severe; dour and pugnacious; tough: the old hard-rock guy who would line up all the cocaine users and shoot them
[1923+; probably fr the difficulty of hard-rock mining as distinct fr other kinds; influenced by rock-hard]