Life Lease Questions

I'm the lessor(landlord) of this agreement what are my rights?(property is in Michigan) Does the lease end at the lessors death or the lesses death?
Can I stop them from subleasing?
Can they bury garbage?(I don't want them to)
they keep cutting down trees; can i stop them?
They built a house on the property and say that they can tare it down or move it; is that true?
Is this Lease for a square of property or a triangle? Any other things that you may thing of please post!
(Please note: I removed the names and addresses for security reasons.)

Lease Agreement
May 22,1996
We the undersigned, on the above date, agree to the following lease agreement:

We ____ and ____ of ____ , ____ , ____ ,
Agree to give a lifetime lease to ____ and ____ of ____ ., ____ , ____ , on a parcel of property owned by us. Description as follows: Beginning at the N.W. corner and running 300 feet East and from same beginning corner running 350 feet South.
All parties agree to the following:
1.) Woods is to be maintained in good condition with no build-up of unnecessary clutter (such as open dumping or junk vehicles) with only necessary trees being removed for reasons such as: removal of building site, clearing driveways and thinning to maintain health a beauty of wood site. Felled trees to be used by leasees as desired.
2.) Leasees to maintain both driveways on said property.
3.) Leasees may put any housing and storage structure (such as pole barn or garage) on property the township allows. Leasees are responsible for making sure all things concerning township codes or regulations are followed.
4.) If taxes increase because of said structures put upon property by leasees, said leasees herein agree to pay the increase.


Prepared by: Signed by:
____ ____
____
____
____
Witnesses:
` ____
____
Notary Public:
____

 

The state in which the property is and was signed is Michigan

 

I had Thought that it was the life of the lessor but they (the lessors) said that it was a 99 year lease. Also if one of the to lesses dies what happens?

I don't think that it was ever really stated that is was either triangle or square, But I think that it suppose to be a triangle but the lessors say that it's a square.

 

Well I Have a fence and a driveway on the part of the rectangle lying outside the triangle.