Stirling Castle is situated on top of atop the Castle Hill in Stirling. It is one of the largest and most significant castles in Scotland. The site...
Landscape Gravel. 1  The average cost for crushed rock gravel or lava rock is $640 for 32 square feet of gravel. 2  The minimum cost that property owners pay for crushed rock gravel or lava rock is $140, which covers 7 square feet of gravel.
The Cost of Landscape Rocks. 1  The cost of decomposed granite is between $35 and $50 per cubic yard. 2  The average cost of crushed granite gravel is $60 per cubic yard. 3  The cost of pea gravel is about $50 per cubic yard.  The cost of river rocks can be as low as $0.05 per pound.