The South Riding RV Travels

459

3rd June 2008 - Mesa Verde National Park CO Colorado

It is 12 miles from the entrance to the park, down by the main highway, to the visitor centre from where you choose which mesa and ruins to explore. The road first climbs all the way to the top of the mesa (which is Spanish for table). The views are spectacular. We have just travelled along the road curving through this view to get here.
But the distances are quite difficult to portray in  the photos. The horizon is probably 50-70 miles away but air quality is rarely good enough for real clarity. Much of the road up has a very steady grade as you can see here looking back across the flank of the hill we have just climbed.
There are many turnoffs where you can stop and study the view. The vertical face on the right is known as Knife Rock. It looks as though it is being guarded by a massive stone turtle. There are snow-covered mountains on most of the horizons.
But they are often quite difficult to see in the haze. We spent two days in the park and the second was much more overcast. The views were even more limited then.
The tree is a reminder that the park has had a number of wildfires in recent years. Over 70% of the park has been affected at some time as we will see later.
There are two main mesas within the park, each with its own road from the visitor centre, but one was not open to us because the RV is too long and too heavy. The people who lived here are now known as Ancestral Puebloans, the name 'Anasazi' no longer being considered politically correct. We went round the Mesa Top Loop first. There are several sites here in chronological order starting with early pit houses which were built by the 'basket makers'. These are little more than shallow depressions in the ground but they would have been covered when occupied. The biggest depression would have been the fireplace, the four holes in a square around it would have held the poles that supported the roof. These houses date from around 700AD.
Successive sites cover later periods as the pits became slightly deeper and more details survive. This one had internal walls. Most pits follow the same design. The pits you can visit are all covered today with steel shelters to protect them from the elements. This one dates from 900-1100AD. Some reuse was made of earlier sites.
As time progressed stonework was introduced and the buildings became deeper. Each family built its own room for ceremonial occasions. This is known as a kiva. Wooden poles rested on the stone pillars with more poles on top of these to create a roof, the gaps being filled with clay. Entry was by a ladder through a hole in the centre of the roof. The hole in the wall on the left is connected to a shaft through which fresh air comes. The stone in front of it deflects the air to create a draught to take the smoke from the fire pit near the middle up through the entry hole. Either side of the fire are depressions for foot drums. The smallest hole directly in front of the fire is the 'sipapu', the access for the spirits to and from the lower worlds.
Around 1100AD many of the houses were built of stone, both above and below ground. Some of these were quite large complexes with many rooms. This one is from the megalithic period, so called because of the use of 'big stones'.
A number of canyons wind their way into the table mesa. These enable us to see the alternating layers of sandstone and shale.
The scale of these is huge. The canyons are up to 2000ft deep. These are very inaccessible areas both from the canyon floor and from the mesa top.
It looks very inhospitable but the mesa top was, and is, a very fertile area with 7-10ft of good quality loess topsoil. The whole mesa area slopes gently towards the south, thus receiving more sunshine and warmth than the surrounding plains, and it attracts clouds so more rain falls here than lower down. Since the Ancestral Puebloans were farmers this is probably the main reason why they chose to live up here. 
The sandstone is at the top with grey shale underneath. As rain falls it seeps slowly through the porous sandstone but when it reaches the non-porous shale the latter breaks up over time and is washed out (a still continuing process), creating covered ledges which you can see just below the mesa top.
The best example here is on the left hand side but there are over 700 archaeological sites within the park.
Under the sandstone roof you can just see the shape of some buildings. These were first spotted by cowboys chasing lost cows in 1921.
On the mesa top loop we were able to look at over a dozen sites on the opposite site of the canyon. There are living spaces, storage spaces, ceremonial spaces, round and square towers.
There are three separate little communities here on different ledges. The trees on the top were all burned in a fire in 2003. It is unknown why the Puebloans moved off the mesa top onto the ledges but it is not thought that aggression from other tribes was a reason. It may be that more land was needed for agriculture to support the growing population.
Another shot of the burned trees, mainly Utah and pinyon pines. They have tried reforestion in other parks with little success. Today it is thought best to let nature take its course. It may take 400 years for the area to fully recover.
But it does happen as can be seen in this area which was burned in an earlier fire. The trunks still remain but the green shrubs are now recovering.